1.

य‌द‌ि ` a(2+sqrt(3))=b(2-sqrt(3))=1` है तो `a/(a^(2)+1)+1/(b^(2)+1)` का मान ज्ञात करें।A. -1B. 1C. 4D. 9

Answer» Correct Answer - B
`a(2+sqrt(3))=b(2-sqrt(3))=1`
`a=1/(2+sqrt(3)), b=1/(2-sqrt(3))`
`implies a=1/b`
`implies 1/(a^(2)+1)+1/(b^(2)+1)`
`implies /(1/(b^(2))+1)+1/(b^(2)+1)`
`=1/((1+b^(2))/(b^(2)))+1/(b^(2)+1)`
`implies (b^(2))/(b^(2)+1)+1/(b^(2)+1)`
`implies (b^(2)+1)/(b^(2)+1)=1`


Discussion

No Comment Found

Related InterviewSolutions