Fixed a typo in the Chebyschev lab.
Merge branch 'master' into chebyschev
Merge branch 'master' into chebyschev
Merge branch 'master' into chebyschev
Merge branch 'master' into chebyschev
Merge branch 'master' into chebyschev
Merge branch 'master' into chebyschev
Added the requested clarification for Clenshaw Recursion.
Merge pull request #454 from insertinterestingnamehere/chebyschev

Chebyschev