Question

यदि `t^(2)-4t+1=0` है तो `t^(3)+1/(t^(3))` का मान ज्ञात करें।
A. 44
B. 48
C. 52
D. 64

Answer 1

Correct Answer - C
`t^(2)-4t+1=0`
`t^(2)+1=4t`
`(t^(2)+1)/t=(4t)/t`
`t+1/t=4`
[take cube both sides]
`t^(3)+1/(t^(3))+3txx1/t(t+1/t)=64`
`t^(3)+1/(t^(3))=64-12=52`
`t^(3)+1/(t^(3))=52`