if-x-a-1-r-n-1-r-make-r-the-subject-of-the-formulae-

Question Number 8421 by uchechukwu okorie favour last updated on 24/Oct/16

i f x = \frac{a (1 - r^{n})}{1 - r}; m a k e r t h e

s u b j e c t o f t h e f o r m u l a e

Commented by FilupSmith last updated on 11/Oct/16

x - x r = a - {a r}^{n}

x - a = x r - {a r}^{n}

w o r k i n g