please find attached the problem and the answer. I can't anderstand the first and second step of the answer. I only need a link for the topic or maybe method he used. Bdw I haven't tried to figure out the second answer but for now I only need help tackling the first one.
f(n+1) = 15^(n+1) - 8^(n-1)
8f(n) = 8.15^n - 8.8^(n-2) = 8.15^n - 8^(n-1)
f(n+1) - 8f(n) = 15^(n+1) - 8^(n-1) - 8.15^n + 8^(n-1)
-->f(n+1) - 8f(n) = 15^(n+1) - 8.15^n
= 7. 15^n
Sorry... im new to this forum how do i write in maths like with the exponents??
press the button to the left of the 'youtube' button and to the right of the 'php' button.
or insert tags such as
[math.][/math.] but do not include the dots