venclovaitev venclovaitev

23-09-2016
Mathematics

Answered

If f(x)=2^x, the f(x+2)- f(x-2)=

A17/2^x

b)15·2^(x-2)

c)17·2^(x-2)

d)15·2^x

e)17·2^x

Verified Answer :

nobillionaireNobley nobillionaireNobley

25-09-2016

f(x) = 2^x
f(x+2) - f(x - 2) = 2^(x + 2) - 2^(x - 2) = 2^x(2^2) - 2^x(1/2^2) = 2^x(2^2 - 1/2^2) = 2^x(4 - 1/4) = 2^x(15/4) = 15(2^x)(1/2^2) = 15·2^(x-2)

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