1.

निम्न फलनों के लिए `theta =(pi)/(2) ` पर ` (d^(2)y)/(dx^(2))` का मान ज्ञात कीजिये| `(i) x=a (theta -sin theta ) ,y=a (1+cos theta )` `(ii) x=a (1-cos theta ), y=a (theta + sin theta )`

Answer» Correct Answer - ` (i)(1)/(a) " "(ii) -(1)/(a) `
`(i) " "x=a (theta -sin theta ) " "rArr " " (dx)/(d theta )=a (1-cos theta )`
` " "y=a (1+cos theta )" "rArr " "(dy)/(dx) =-asin theta `
अब ` (dy)/(dx) =(dy//d theta)/(dx//d theta ) ` व ` theta = (pi)/(2)` का प्रयोग करने पर|


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