I need help to solve this problem(adsbygoogle = window.adsbygoogle || []).push({});

Use induction to prove that, for n>=0:

3*5^0 + 3*5^1 + 3*5^2 + 3*5^3 + ...+ 3*5^n = 3*(5^(n+1)-1)/4

in other word

n

[tex]\sum[/tex] 3*5 k= 3*(5 n+1-1) / 4

k= 0

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Proof by induction

**Physics Forums | Science Articles, Homework Help, Discussion**