Question 26:
If \(\Delta=\left|\begin{array}{lll}a & b & c \\ d & e & f \\ g & h & i\end{array}\right|\) and \(A, B, C, D, G\) are the cofactors of the elements \(a, b, c, d, g\) respectively, then what is \(b B + c C - d D - g G\) equal to?
If \(\Delta=\left|\begin{array}{lll}a & b & c \\ d & e & f \\ g & h & i\end{array}\right|\) and \(A, B, C, D, G\) are the cofactors of the elements \(a, b, c, d, g\) respectively, then what is \(b B + c C - d D - g G\) equal to?
Question 31:
If \(p,1,q\) are in AP and \(p,2,q\) are in GP, then which of the following statements is/are correct?
I. \(p,4,q\) are in HP.
II. \((1/p),1/4,(1/q)\) are in AP.
If \(p,1,q\) are in AP and \(p,2,q\) are in GP, then which of the following statements is/are correct?
I. \(p,4,q\) are in HP.
II. \((1/p),1/4,(1/q)\) are in AP.
Question 42:
What is \( \left(p^{2}+q^{2}+r^{2}\right) \) equal to?
What is \( \left(p^{2}+q^{2}+r^{2}\right) \) equal to?
\( \left(p^{2}+q^{2}+r^{2}\right) \) किसके बराबर है? ??