Khan/khan-exercises — Issue #15707: Domain of a function - Density check (mine)
Author: KhanBugz
Created: 2012-03-08 08:20:51+00:00
State: open
Labels: other, safari, snowleo

Reporter: michael.cheshire10@ntlworld.com

Was puzzled during this exercise by the number of examples with apparently the same factor in the numerator and denominator of the function. Could not anyone dream up a factor and multiply top and bottom of a function in a fraction form and thereby alter the domain of f(x)?

[domain_of_a_function.html?seed=33&problem=two-denom-cond](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/domain_of_a_function.html?seed=33&problem=two-denom-cond&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/domain_of_a_function.html?seed=33&problem=two-denom-cond&debug&activity=%5B%5D)

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