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GATE2018-43
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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) ________
gate2018
numerical-answers
asked
Feb 20, 2018
in
Others
gatecse
1.4k
points
edited
Dec 19, 2020
by
jothee
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