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If f(x) = 4^x then f(x-1)-f(x) equals (a) 4 (b) f(x) (c) 2f(x) (d) 3f(x)




  • If f(x) = 4^x then f(x-1)-f(x) equals
    (a) 4
    (b) f(x)
    (c) 2f(x)
    (d) 3f(x)




Grade:11

2 Answers

Amit Saxena
35 Points
9 years ago

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Khandavalli Satya Srikanth
38 Points
9 years ago

f(x-1)-f(x)=4^(x-1)-4^x

=(4^x)(4^-1)-(4^x)

=4^x((1/4)-1)

=(-3/4)f(x)

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