Question

Dado f(x)= 4 elevado a x, demostrar que f(x+1) - f(x) = 3f(x)

Answer 1

f(x) = 4^x

f(x-1) - f(x) = 3f(x)
4^x+1 - 4^x = 3(4^x)
4(4^x) - 4^x = 3(4^x)
3(4^x) = 3(4^x)
4^x = 4^x