Question

$f(x)=3^x-\frac{9^x}{4} \\f(x-1)=?$

Answer 1

f(x)= 3^x -9^x/4

f(x-1)= 3^(x-1) -9^(x-1)/4

=3^x/3 -9^x/9/4

=3^x/3-9^x/36

$\boxed{ \boxed{ \boxed{ \mathsf{f(x - 1) = \frac{ {3}^{x} }{3} - \frac{ {9}^{x} }{36} }}}}$

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