English

Find the Value of λ, a Non-zero Scalar, If λ `[[1 0 2],[3 4 5]]+[[1 2 3],[-1 -3 2]]`=`[[4 4 10],[4 2 14]]`

Advertisements
Advertisements

Question

Find the value of λ, a non-zero scalar, if λ

Sum
Advertisements

Solution

\[Given: \lambda\begin{bmatrix}1 & 0 & 2 \\ 3 & 4 & 5\end{bmatrix} + 2\begin{bmatrix}1 & 2 & 3 \\ - 1 & - 3 & 2\end{bmatrix} = \begin{bmatrix}4 & 4 & 10 \\ 4 & 2 & 14\end{bmatrix}\]
\[ \Rightarrow \begin{bmatrix}\lambda & 0 & 2\lambda \\ 3\lambda & 4\lambda & 5\lambda\end{bmatrix} + \begin{bmatrix}2 & 4 & 6 \\ - 2 & - 6 & 4\end{bmatrix} = \begin{bmatrix}4 & 4 & 10 \\ 4 & 2 & 14\end{bmatrix}\]
\[ \Rightarrow \begin{bmatrix}\lambda + 2 & 0 + 4 & 2\lambda + 6 \\ 3\lambda - 2 & 4\lambda - 6 & 5\lambda + 4\end{bmatrix} = \begin{bmatrix}4 & 4 & 10 \\ 4 & 2 & 14\end{bmatrix}\]
\[ \Rightarrow \lambda + 2 = 4 \]
\[ \Rightarrow \lambda = 4 - 2 \]
\[ \therefore \lambda = 2\]

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Algebra of Matrices - Exercise 5.2 [Page 19]

APPEARS IN

R.D. Sharma Mathematics Volume 1 and 2 [English] Class 12
Chapter 4 Algebra of Matrices
Exercise 5.2 | Q 17 | Page 19
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×