Question

if f(x) = (x ^-x - x^0 + 2^x), then f (3) is equal to
a -22
b -21
c 7 1/27
d 8 1/27

Answer 1

substitute 3 for x and..

Answer 2

f(x)=(x^-x-x^0+2^x)

f(3) = 3^-3 - 3^0 + 2^3

f(3) = 1/27 - 1 + 8

f(3) = 7 1/27

Answer 3

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