Solution - Inverse of a Matrix by Elementary Operations



      Forgot password?

View all notifications
Books Shortlist
Your shortlist is empty



If A = `[[1,-2,3],[0,-1,4],[-2,2,1]]` ,find (A')-1



You need to to view the solution
Is there an error in this question or solution?

Similar questions VIEW ALL

A typist charges Rs. 145 for typing 10 English and 3 Hindi pages, while charges for typing 3 English and 10 Hindi pages are Rs. 180. Using matrices, find the charges of typing one English and one Hindi page separately. However typist charged only Rs. 2 per page from a poor student Shyam for 5 Hindi pages. How much less was charged from this poor boy? Which values are reflected in this problem?

view solution

A shopkeeper has 3 varieties of pens 'A', 'B' and 'C'. Meenu purchased 1 pen of each variety for a total of Rs 21. Jeevan purchased 4 pens of 'A' variety 3 pens of 'B' variety and 2 pens of 'C' variety for Rs 60. While Shikha purchased 6 pens of 'A' variety, 2 pens of 'B' variety and 3 pens of 'C' variety for Rs 70. Using matrix method, find cost of each variety of pen.

view solution

Reference Material

Solution for concept: Inverse of a Matrix by Elementary Operations. For the courses 12th CBSE (Arts), 12th CBSE (Commerce), 12th CBSE (Science)