Solution for X

[sang5650]

For how many integers X is 4x=x^4?

A)0
B)1
C)2
D)3
E)4

[firdaus117]

Option B for [spoiler]x=0[/spoiler]

[sang5650]

Nope the Official answer for this is 2. (C)

The explanation was : The only 2 integers for which the stm is true are : 2 and 4

This question is from McGraw Hills - Practice test 1.

I think the question itself is flawed. Any views?

[ajith]

Nope the Official answer for this is 2. (C)

The explanation was : The only 2 integers for which the stm is true are : 2 and 4

This question is from McGraw Hills - Practice test 1.

I think the question itself is flawed. Any views?

Then the question must be For how many integers X is 4^x=x^4?

then your explanation fits the bill!

[sang5650]

Yeah the question is surely flawed. For the given equation 4x= X^4, the only possible sol. would be 1, which is the value Zero.