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Deffense [45]
3 years ago
11

What is the value of f(-2) for the given function

Mathematics
1 answer:
scZoUnD [109]3 years ago
3 0

Copy down the given function:

f(x)=3•2^x

Now replace both instances of x with -2:

f(-2) = 3*2^(-2).                                1

Recall that 2^(-2) is the same as ------ = 1/4

                                                      2^2

Therefore, f(-2) = 3*2^(-2) = 3*(1/4) = 3/4

Remember that exponentiation has to be carried out before multiplication.  That's why I did 2^(-2) before multiplying by 3.

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Read 2 more answers
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