show that 1+2+3+...+n=n(n+1)/2 for all n €N by using principal of mathematical induction
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show that 4^3+8^3+12^3+...+n terms = 16n^2(n+1)^2
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(1^2)+(1^2+2^2)+(1^2+2^2+3^2)+...n terms=n(n+1)^2(n+2)/12
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everything will be fine
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find the derivative of the following w.r.to x.
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