Matrices Exercise 3.4 Solutions Question 2.<\/strong> \n\\(\\begin{bmatrix} 2 & 1 \\\\ 1 & 1 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 2 & 1 \\\\ 1 & 1 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\nQuestion 3. \n\\(\\begin{bmatrix} 1 & 3 \\\\ 2 & 7 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 1 & 3 \\\\ 2 & 7 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
<\/p>\n
Question 4. \n\\(\\begin{bmatrix} 2 & 3 \\\\ 5 & 7 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 2 & 3 \\\\ 5 & 7 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
Question 5. \n\\(\\begin{bmatrix} 2 & 1 \\\\ 7 & 4 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 2 & 1 \\\\ 7 & 4 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
Question 6. \n\\(\\begin{bmatrix} 2 & 5 \\\\ 1 & 3 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 2 & 5 \\\\ 1 & 3 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
<\/p>\n
Question 7. \n\\(\\begin{bmatrix} 3 & 1 \\\\ 5 & 2 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 3 & 1 \\\\ 5 & 2 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
Question 8. \n\\(\\begin{bmatrix} 4 & 5 \\\\ 3 & 4 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 4 & 5 \\\\ 3 & 4 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
Question 9. \n\\(\\begin{bmatrix} 3 & 10 \\\\ 2 & 7 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 3 & 10 \\\\ 2 & 7 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
<\/p>\n
Question 10. \n\\(\\begin{bmatrix} 3 & -1 \\\\ -4 & 2 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 3 & -1 \\\\ -4 & 2 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
Question 11. \n\\(\\begin{bmatrix} 2 & -6 \\\\ 1 & -2 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 2 & -6 \\\\ 1 & -2 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
<\/p>\n
Question 12. \n\\(\\begin{bmatrix} 6 & -3 \\\\ -2 & 1 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 6 & -3 \\\\ -2 & 1 \\end{bmatrix}\\) \nTo use column transformation write A = AI \n\\(\\begin{bmatrix} 6 & -3 \\\\ -2 & 1 \\end{bmatrix}\\) = A\\(\\left[\\begin{array}{ll} 1 & 0 \\\\ 0 & 1 \\end{array}\\right]\\) \nApplying C1<\/sub> \u2192 C1<\/sub> + 2C2<\/sub> \n\\(\\left[\\begin{array}{ll} 0 & -3 \\\\ 0 & 1 \\end{array}\\right]\\) = A\\(\\left[\\begin{array}{ll} 1 & 0 \\\\ 2 & 1 \\end{array}\\right]\\)<\/p>\nQuestion 13. \n\\(\\begin{bmatrix} 2 & -3 \\\\ -1 & 2 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 2 & -3 \\\\ -1 & 2 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
Question 14. \n\\(\\begin{bmatrix} 2 & 1 \\\\ 4 & 2 \\end{bmatrix}\\) \nSolution: \nLet \\(A=\\begin{bmatrix} 2 & 1 \\\\ 4 & 2 \\end{bmatrix}\\) \nWrite \nA = IA \n <\/p>\n
<\/p>\n
Question 15. \n\\(\\left[ \\begin{matrix} 2 & -3 & 3 \\\\ 2 & 2 & 3 \\\\ 3 & -2 & 2 \\end{matrix} \\right] \\) \nSolution: \n <\/p>\n
Question 16. \n\\(\\left[ \\begin{matrix} 1 & 3 & -2 \\\\ -3 & 0 & -5 \\\\ 2 & 5 & 2 \\end{matrix} \\right] \\) \nSolution: \n <\/p>\n
<\/p>\n
Question 17. \n\\(\\left[ \\begin{matrix} 2 & 0 & -1 \\\\ 5 & 1 & 0 \\\\ 0 & 1 & 3 \\end{matrix} \\right] \\) \nSolution: \nRow transformation \nLet \\(A=\\left[ \\begin{matrix} 2 & 0 & -1 \\\\ 5 & 1 & 0 \\\\ 0 & 1 & 3 \\end{matrix} \\right] \\) \n <\/p>\n
Question 18. \nChoose the correct answer in the following question: \nMatrices A and B will be inverse of each other only if \n(a) AB = BA \n(b) AB = BA = 0 \n(c) AB = 0, BA = 1 \n(d) AB = BA = I \nSolution: \nChoice (d) is correct \ni.e., AB = BA = I<\/p>\n","protected":false},"excerpt":{"rendered":"
These NCERT Solutions for Class 12 Maths Chapter 3 Matrices Ex 3.4 Questions and Answers are prepared by our highly skilled subject experts. https:\/\/mcq-questions.com\/ncert-solutions-for-class-12-maths-chapter-3-ex-3-4\/ NCERT Solutions for Class 12 Maths Chapter 3 Matrices Exercise 3.4 Ex 3.4 Class 12 NCERT Solutions Question 1. Solution: Let Write A = IA Matrices Exercise 3.4 Solutions Question 2. …<\/p>\n
NCERT Solutions for Class 12 Maths Chapter 3 Matrices Ex 3.4<\/span> Read More »<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","spay_email":""},"categories":[3],"tags":[],"yoast_head":"\nNCERT Solutions for Class 12 Maths Chapter 3 Matrices Ex 3.4 - MCQ Questions<\/title>\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n\t \n\t \n\t \n