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Mathematics
Sassie
10 June, 12:32
For f (x) = -2^x, what is f (-2) ?
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Makai Bates
10 June, 15:17
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Remark
The way this is written, the minus sign is not effected by the power (x). In order for x to affect the minus sign, you need to use brackets.
f (x) = (-2) ^x Since it is not written this way, the answer will be minus
Formula
f (x) = - (2) ^x
Solve
f (-2) means that x is - 2 where ever you see it
f (-2) = - (2) ^-2
f (-2) = - (1/2) ^2
f (-2) = - (1/4) Answer
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