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2tan^(-1)((1)/(3))+tan^(-1)((1)/(7))=...

2tan^(-1)((1)/(3))+tan^(-1)((1)/(7))=

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Prove that 2tan^(-1)((1)/(2))+ tan^(-1)((1)/(7))= tan^(-1)((31)/(17))

tan^(-1)((1)/(5))+tan^(-1)((1)/(7))+tan^(-1)((1)/(3))+tan^(-1)((1)/(8))=

2tan^(-1)((1)/(5))+tan^(-1)((1)/(7))+2tan^(-1)((1)/(8))=

2tan^(-1)((1)/(5))+tan^(-1)((1)/(8))= tan^(-1)((4)/(7))

Prove that tan^(-1)((1)/(5)) +tan^(-1)((1)/(7)) +tan^(-1)((1)/(3)) +tan^(-1)((1)/(8)) = (pi)/(4) .

Prove that: tan^(-1)((1)/(5))+tan^(-1)((1)/(7))+tan^(-1)((1)/(3))+tan^(-1)((1)/(8))=(pi)/(4)

Solve: tan^(-1)((1)/(2))+tan^(-1)((1)/(3))+tan^(-1)((3)/(5))+tan^(-1)((1)/(7))

prove that: 2 tan ^(-1).(1)/(3) + tan^(-1).(1)/( 7) = (pi)/(4)

prove that: 2 tan ^(-1)x =(1)/(3) tan^(-1).(1)/( 7) = (pi)/(4)