Log In
Welcome to GATE BioTechnology, where you can ask questions and receive answers from other members of the community.
0 votes
If $1+r + r^2+ r^3 +\dots \infty = 1.5$, then, $1 + 2r + 3r^2 + 4r^3 + \dots \infty = $ (up to two dcimal places) ________
in Others 1.4k points
edited by

Please log in or register to answer this question.