Advertisements
Advertisements
Question
Compute the indicated product:
`[(a, b),(-b, a)][(a, -b),(b, a)]`
Sum
Advertisements
Solution
`[(a, b),(-b, a)][(a, -b),(b, a)]`
= `[(a(a) + b(b), a(-b) + b(a)), (-b(a) + a(b), -b(-b) + a(a))]`
= `[(a^2 + b^2, -ab + ab), (-ab + ab, b^2 + a^2)]`
= `[(a^2 + b^2, 0),(0, a^2 + b^2)]`
shaalaa.com
Is there an error in this question or solution?
