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Solution for X

Expert replies
Source: — Problem Solving |

by firdaus117 » Tue Feb 23, 2010 7:43 pm
Option B for [spoiler]x=0[/spoiler]
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by sang5650 » Tue Feb 23, 2010 7:56 pm
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?
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by ajith » Tue Feb 23, 2010 8:37 pm
sang5650 wrote: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!
Always borrow money from a pessimist, he doesn't expect to be paid back.
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by sang5650 » Wed Feb 24, 2010 9:58 am
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.
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