Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Explain solution RD Sharma class 12 chapter 4 Algebra of Matrices exercise Fill in the blank question 4 maths

Explain solution RD Sharma class 12 chapter 4 Algebra of Matrices exercise Fill in the blank question 4 maths

Answers (1)

Answer:

 a = 3 and b = 4.

Hint:

Use basic concept of matrix multiplication

Given:

.a<b \text { and }\left[\begin{array}{ll} a & b \end{array}\right]\left[\begin{array}{l} a \\ b \end{array}\right]=25

Solution:

\begin{aligned} &\left[\begin{array}{ll} a & b \end{array}\right]\left[\begin{array}{l} a \\ b \end{array}\right]=25 \\ &{[a \times a+b \times b]=25} \end{aligned}

simplify the multiplication

\begin{aligned} &{\left[a^{2}+b^{2}=25\right]} \\ &\text { Let's } a=3, b=4 \\ &\text { Then } L . H . S .=3^{2}+4^{2}=9+16=25=R . H . S . \\ &\text { So, } a=3, b=4 \end{aligned}

Posted by

Gurleen Kaur

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

‘More exhausting than manual’: How CBSE on-screen marking system is draining teachers it was meant to help
anam-khan

CBSE Class 12 Accountancy Paper Analysis: Moderate overall; competency-based MCQs, no journal entry questions
anam-khan

CBSE Class 12 Board Exam 2026 LIVE: Accountancy 12th paper 'moderate' in difficulty; set 1, 2 answer keys

Latest Question