1.

यदि `y=tan^(-1)(cotx)+cot^(-1)(tanx)`, सिद्ध करें कि `(dy)/(dx)= -2`

Answer» Correct Answer - `-(1)/(2(1+x^(2)))`
`y=tan^(-1){tan((1)/(2)pi-x)}+cot^(-1){cot((1)/(2)pi-x)}`
`=((1)/(2)pi-x)+((1)/(2)pi-x)=pi-2x`


Discussion

No Comment Found