As per the questionf(x)=f(1-x)smithpa2 wrote:Can someone address this question?
Substitute 1-x on for x in all the answer choices.
The answer should be the same is f(x)
f(x)=(x)^2(1-x)^2
f(1-x)=(1-x)^2[(1-(1-x)]^2
f(1-x)=(x)^2(1-x)^2
OA D
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Source: Beat The GMAT — Problem Solving |
Substitute 1-x on for x in all the answer choices.
The answer should be the same is f(x)
f(x)=(x)^2(1-x)^2
f(1-x)=(1-x)^2[(1-(1-x)]^2
f(1-x)=(x)^2(1-x)^2
OA D
You cannot discover new oceans unless you have the courage to loose sight of the shore.
Easy way to solve this would be take x = 0 therefore f(1-x) is f(1)
Substitute 0 and 1 in all the choices and see which matches
D) will be it.
I should say that the credit for solving by picking 0 and 1 goes to Ron who is one of the instructors with Manhattan gmat.
Substitute 0 and 1 in all the choices and see which matches
D) will be it.
I should say that the credit for solving by picking 0 and 1 goes to Ron who is one of the instructors with Manhattan gmat.
How do you know 0 and 1, and not 1 and 2 for example.Sunny22uk wrote:As per the questionf(x)=f(1-x)smithpa2 wrote:Can someone address this question?
Substitute 1-x on for x in all the answer choices.
The answer should be the same is f(x)
f(x)=(x)^2(1-x)^2
f(1-x)=(1-x)^2[(1-(1-x)]^2
f(1-x)=(x)^2(1-x)^2
OA D
Thanks in advance
0 and 1 are just what was chooses. It could be any 2
Test it with 1 and 2 You can eliminate some choices and lets say 2 choices still turn out to be true test it with 2 new numbers(easy to work with and will not take more time) to comfirm the right choice
Sometimes u get lucky in picking numbers that may reveal the flaw in all the choices except one which must be the right answer
Test it with 1 and 2 You can eliminate some choices and lets say 2 choices still turn out to be true test it with 2 new numbers(easy to work with and will not take more time) to comfirm the right choice
Sometimes u get lucky in picking numbers that may reveal the flaw in all the choices except one which must be the right answer
