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    				| 1. | 
                                    Find derivatives of the following functions.cot^-1frac{sqrt(1-x^2)}{x} | 
                            
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Answer» Solution :`y=COT^(-1)frac{SQRT(1-x^2)}{x}` `[Put x=SIN THETA` `cot^(-1)fracsqrt(1-sin^2theta)sintheta=cot^(-1)fraccosthetasintheta` `cot^(-1)cottheta=theta =sin^(-1)x` `dy/dx=1/sqrt(1-x^2)`  | 
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