need help on GMATPrep questions!!
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- jayhawk2001
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For the first question, please check
https://www.beatthegmat.com/viewtopic.php?t=3852
For the second question,
1 - f(x) = 1-x, f(1-x) = 1-(1-x) = x. So, not equal
2 - f(x) = 1-x^2, f(1-x) = 1-(1-x)^2. Not equal
3 - Same logic. Not equal
5 - f(x) = x/(1-x), f(1-x) = (1-x) / x. Not equal
4 satisfies condition
f(x) = x^2(1-x)^2
f(1-x) =(1-x)^2*x^2
Both equal
https://www.beatthegmat.com/viewtopic.php?t=3852
For the second question,
1 - f(x) = 1-x, f(1-x) = 1-(1-x) = x. So, not equal
2 - f(x) = 1-x^2, f(1-x) = 1-(1-x)^2. Not equal
3 - Same logic. Not equal
5 - f(x) = x/(1-x), f(1-x) = (1-x) / x. Not equal
4 satisfies condition
f(x) = x^2(1-x)^2
f(1-x) =(1-x)^2*x^2
Both equal