1.limx→1x+x2+…+xn−nx−1\displaystyle\lim_{x\to1}\frac{x+x^2+\ldots+x^n-n}{x-1}x→1limx−1x+x2+…+xn−n isa.nnnb.n+12\frac{n+1}{2}2n+1c.n(n+1)2\frac{n(n+1)}{2}2n(n+1)d.n(n−1)2\frac{n(n-1)}{2}2n(n−1)Login to continueOnly logged in users canattempt or see the solution.
