Question
The infinite series 1+3x +9x^2 +27x^3+.. has a sum of 4.The value of x is?
so if 1/1-r I substitute 1/1-3x =4
so x=1/4
if someone could confirm that my answer is correct? thanks so much
so if 1/1-r I substitute 1/1-3x =4
so x=1/4
if someone could confirm that my answer is correct? thanks so much
Answers
Steve
Looks good to me.