if 1+y, 1+3y, 1+4y (y cant be 0..sorry i dont know how to write it in math equation here ) are three consecutive terms of a Geometric Progression. Find
(a) the value of y
(b) the sum to infinity.
the ans from book
but i have calculate and get this ans
thank for your advice
tq for the post ..now i can see where my calculation wrong
can u guide me how to make this equation in latex look more bigger