Question

The number of values of q∈ [0, p] such that l = cos³q + sin³q and system of equation 3x – y + 4z = 3, x + 2y – 3z = – 2,

6x + 5y + 5lz = – 3 does not have a unique solution is / are –

• A. 0
• B. Infinite
• C. 1
• D. None of these

Answer 1

Answer: (C)

1

Answer 2

D = $\left| \begin{matrix} 3 & - 1 & 4 \\ 1 & 2 & - 3 \\ 6 & 5 & 5\lambda \end{matrix} \right|$ = 7(5l + 5) = 0 Ž l – 1.