1.

यदि `x+1/x=sqrt(3)` हो तो `x^(3)+1/(x^(3))` का मान ज्ञात करें?A. -2B. 0C. 2D. 4

Answer» Correct Answer - B
`x+1/x=sqrt(3)`
cubing both side
`x^(3)+1/(x^(3))+3x xx1/x(x+1/x)=3sqrt(3)`
`x^(3)+1/(x^(3))+3(sqrt(3))=3sqrt(3)`
`x^(3)+1/(x^(3))=3sqrt(3)-3sqrt(3)=0`


Discussion

No Comment Found

Related InterviewSolutions