1.

If 0<a<1,b<1, and tan−1a+tan−1b=π4, then the value of (a+b)−(a2+b22)+(a3+b33)−(a4+b44)+....

Answer»

If 0<a<1,b<1, and tan1a+tan1b=π4, then the value of (a+b)(a2+b22)+(a3+b33)(a4+b44)+....



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