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                                                                   EXHIBIT 10.45

                                    IVY FUND

                 MASTER BUSINESS MANAGEMENT AGREEMENT SUPPLEMENT

                        IVY GLOBAL NATURAL RESOURCES FUND

         AGREEMENT made as of the 29th day of May, 2001, by and between Ivy Fund
(the "Trust") and Ivy Management, Inc. (the "Manager").

         WHEREAS, the Trust is an open-end investment company organized as a
Massachusetts business trust and consists of such separate investment portfolios
as have been or may be established and designated by the Trustees of the Trust
from time to time;

         WHEREAS, a separate class of shares of the Trust is offered to
investors with respect to each investment portfolio;

         WHEREAS, the Trust has adopted a Master Business Management Agreement
dated May 29, 2001 (the "Master Agreement"), pursuant to which the Trust has
appointed the Manager to provide the business management services specified in
that Master Agreement; and

         WHEREAS, Ivy Global Natural Resources Fund (the "Fund") is a separate
investment portfolio of the Trust.

         NOW, THEREFORE, the Trustees of the Trust hereby take the following
actions, subject to the conditions set forth:

         1.       As provided for in the Master Agreement, the Trust hereby
adopts the Master Agreement with respect to the Fund, and the Manager hereby
acknowledges that the Master Agreement shall pertain to the Fund, the terms and
conditions of such Master Agreement being hereby incorporated herein by
reference.

         2.       The term "Fund" as used in the Master Agreement shall, for
purposes of this Supplement, pertain to the Fund.

         3.       As provided in the Master Agreement and subject to further
conditions as set forth therein, the Fund shall pay the Manager a monthly fee on
the first business day of each month based upon the average daily value (as
determined on each business day at the time set forth in the Fund's Prospectus
for determining net asset value per share) of the Fund's net assets during the
preceding month at the annual rate of 0.50%.

         4.       This Supplement and the Master Agreement (together, the
"Agreement") shall become effective with respect to the Fund as of the date
first written above or such later date as the shareholders may approve the
Agreement, and unless sooner terminated as hereinafter provided, the Agreement
shall remain in effect with respect to the Fund until September 30, 2001 and
from year to year thereafter if such continuance is specifically approved at
least annually (a) by the vote of a majority of the outstanding voting
securities of the Fund (as defined in the Investment Company Act of 1940, as
amended (the "1940 Act")) or by the Trust's entire Board

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of Trustees and (b) by the vote, cast in person at a meeting called for that
purpose, of a majority of the Trust's Independent Trustees. This Agreement may
be terminated with respect to the Fund at any time, without payment of any
penalty, by vote of a majority of the outstanding voting securities of the Fund
(as defined in the 1940 Act) or by vote of a majority of the Trust's entire
Board of Trustees on sixty (60) days' written notice to the Manager or by the
Manager on sixty (60) days' written notice to the Trust. This Agreement shall
terminate automatically in the event of its assignment (as defined in the 1940
Act).

         IN WITNESS WHEREOF, the Trust and the Manager have adopted this
Supplement as of the date first set forth above.

                                IVY FUND, on behalf of
                                Ivy Global Natural Resources Fund

                                By:  /s/ James W. Broadfoot
                                   --------------------------------
                                   Title:  President

                                IVY MANAGEMENT, INC.

                                By:  /s/ James W. Broadfoot
                                   --------------------------------
                                   Title:  President<PAGE>
                                                                   EXHIBIT 10.46

                          INVESTMENT ADVISORY AGREEMENT

         AGREEMENT made this 29th day of May, 2001, by and between Ivy Fund (the
"Trust") and Mackenzie Financial Corporation (the "Adviser").

         WHEREAS, the Trust is an open-end investment company with one or more
investment portfolios, one of which is Ivy Global Natural Resources Fund (the
"Fund"); and

         WHEREAS, the Trust has, on behalf of the Fund, entered into an
agreement with Ivy Management, Inc. (the "Manager") to provide management and
administrative services; and

         WHEREAS, the Trust engages in the business of investing and reinvesting
the assets of the Fund in the manner and in accordance with the investment
objective and restrictions specified in the currently effective Prospectus (the
"Prospectus") relating to the Trust and the Fund included in the Trust's
Registration Statement, as amended from time to time, filed by the Trust under
the Investment Company Act of 1940 (the "1940 Act") and the Securities Act of
1933;

         NOW, THEREFORE, in consideration of the premises and mutual covenants
herein contained, the parties agree as follows:

         1.       The Trust hereby appoints the Adviser to provide the
investment advisory services specified in this Agreement with regard to the Fund
and the Adviser hereby accepts such appointment.

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         2.       (a)      The Adviser shall, at its expense, (i) employ or
associate with itself such persons as it believes appropriate to assist it in
performing its obligations under this Agreement and (ii) provide all services,
equipment and facilities necessary to perform its obligations under this
Agreement.

                  (b)      The Trust shall be responsible for all of its
expenses and liabilities, including: (1) the fees and expenses of the Trust's
Trustees who are not parties to this Agreement or "interested persons" (as
defined in the 1940 Act) of any such party ("Independent Trustees"); (2) the
salaries and expenses of any of the Trust's officers or employees who are not
affiliated with the Manager or the Adviser; (3) interest expenses; (4) taxes and
governmental fees, including any original issue taxes or transfer taxes
applicable to the sale or delivery of shares or certificates therefor; (5)
brokerage commissions and other expenses incurred in acquiring or disposing of
portfolio securities; (6) the expenses of registering and qualifying shares for
sale with the Securities and Exchange Commission and with various state
securities commissions; (7) accounting and legal costs; (8) insurance premiums;
(9) fees and expenses of the Trust's Custodian and Transfer Agent and any
related services; (10) expenses of obtaining quotations of portfolio securities
and of pricing shares; (11) expenses of maintaining the Trust's legal existence
and of shareholders' meetings; (12) expenses of preparation and distribution to
existing shareholders of periodic reports, proxy materials and prospectuses;
(13) fees and expenses of membership in industry organizations; and (14)
expenses of qualification of the Trust as a foreign entity authorized to do
business in any jurisdiction in which the Manager determines that such
qualification is necessary or desirable.

                                       -2-

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         3.       (a)      As manager of the assets of the Fund, the Adviser
shall make investments for the account of the Fund in accordance with the
Adviser's best judgment and within the investment objective and restrictions set
forth in the Prospectus applicable to the Fund, the 1940 Act and the provisions
of the Internal Revenue Code relating to regulated investment companies, subject
to policy decisions adopted by the Trust's Board of Trustees.

                  (b)      The Adviser will determine the securities to be
purchased or sold by the Fund and will place orders pursuant to its
determinations with any broker or dealer who deals in such securities. The
Adviser also shall (i) comply with all reasonable requests of the Trust for
information, including information required in connection with the Trust's
filings with the Securities and Exchange Commission and state securities
commissions, and (ii) provide such other services as the Adviser shall from time
to time determine, upon consultation with the Manager, to be necessary or useful
to the administration of the Funds.

                  (c)      The Adviser shall furnish to the Trust's Board of
Trustees periodic reports on the investment performance of the Fund and on
performance of its obligations under this Agreement and shall supply such
additional reports and information as the Trust's officers or Board of Trustees
shall reasonably request.

                  (d)      On occasions when the Adviser deems the purchase or
sale of a security to be in the best interest of the Fund as well as other
customers, the Adviser, to the extent permitted by applicable law, may aggregate
the securities to be so sold or purchased in order to obtain the best execution
or lower brokerage commissions, if any. The Adviser also may purchase or sell a
particular security for one or more customers in different amounts. On

                                       -3-

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either occasion, and to the extent permitted by applicable law and regulations,
allocation of the securities so purchased or sold, as well as the expenses
incurred in the transaction, will be made by the Adviser in the manner it
considers to be the most equitable and consistent with its fiduciary obligations
to the Fund and to such other customers.

         4.       The Adviser shall give the Trust the benefit of the Adviser's
best judgment and efforts in rendering services under this Agreement. The Trust
agrees that the Adviser shall not be liable under this Agreement for any mistake
in judgment or in any other event whatsoever, provided that nothing in this
Agreement shall be deemed to protect or purport to protect the Adviser against
any liability to the Trust or its shareholders to which the Adviser would
otherwise be subject by reason of willful misfeasance, bad faith or gross
negligence in the performance of the Adviser's duties under this Agreement or by
reason of the Adviser's reckless disregard of its obligations and duties
hereunder.

         5.       In consideration of the services to be rendered by the Adviser
under this Agreement, the Trust shall pay the Adviser a monthly fee on the first
business day of each month, at the annual rate of 0.50% of the average daily
value (as determined on each business day at the time set forth in the
Prospectus of the Fund for determining net asset value per share) of the net
assets of the Fund during the preceding month. If the fees payable to the
Adviser pursuant to this paragraph 5 begin to accrue before the end of any month
or if this Agreement terminates before the end of any month, the fees for the
period from that date to the end of that month or from the beginning of that
month to the date of termination, as the case may be, shall be prorated
according to the proportion which the period bears to the full month in which
the

                                      -4-

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effectiveness or termination occurs. For purposes of calculating the monthly
fees, the value of the net assets of the Fund shall be computed in the manner
specified in the Prospectus of the Fund for the computation of net asset value.
For purposes of this Agreement, a "business day" is any day on which the New
York Stock Exchange is open for trading.

         6.       (a)      This Agreement shall become effective as of the date
first written above or such later date as the shareholders may approve this
Agreement, and shall continue in effect until September 30, 2001, provided, that
the Agreement will continue in effect beyond September 30, 2001, only so long as
the continuance is specifically approved at least annually (i) by the vote of a
majority of the outstanding voting securities of the Fund (as defined in the
1940 Act) or by the Trust's Board of Trustees and (ii) by the vote, case in
person at a meeting called for that purpose, of a majority of the Trust's
Independent Trustees.

                  (b)      This Agreement may be terminated with respect to the
Fund at any time, without the payment of any penalty, by a vote of a majority of
the outstanding voting securities of the Fund (as defined in the 1940 Act) or by
a vote of a majority of the Trust's entire Board of Trustees on 60 days' written
notice to the Adviser or by the Adviser on 60 days' written notice to the Trust.
This Agreement shall terminate automatically in the event of its assignment (as
defined in the 1940 Act).

         7.       (a)      This Agreement shall be construed in accordance with
the laws of the State of Florida, provided that nothing herein shall be
construed in a manner inconsistent with the 1940 Act.

                                      -5-

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                  (b)      The Trust's Declaration of Trust has been filed with
the Secretary of State of The Commonwealth of Massachusetts. The obligations of
the Trust are not personally binding upon, nor shall resort be had to the
private property of, any of the Trustees, shareholders, officers, employees or
agents of the Trust, but only the Trust's property shall be bound. It is further
understood and acknowledged that all persons dealing with any series of the
Trust must look solely to the property of such series for the enforcement of any
claims against that series as neither the Trustees, shareholders, officers,
employees or agents assume any personal liability for obligations entered into
on behalf of any series of the Trust. No series of the Trust shall be liable for
the obligations or liabilities of any other series.

         IN WITNESS WHEREOF, the parties hereto have caused the Agreement to be
executed as of the date first above written.

                                IVY FUND, on behalf of Ivy Global Natural
                                Resources Fund

                                By:  /s/ James W. Broadfoot
                                   ---------------------------------
                                   TITLE:  President

                                MACKENZIE FINANCIAL CORPORATION

                                By:  /s/ James L. Hunter
                                   ---------------------------------
                                   TITLE:  President

                                      -6-

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