For invertible matrices, (AB)−1=B−1A−1 (reversal law for inverse) and (AB)′=B′A′ (reversal law for transpose). So statements (B) and (D) are correct.
CUET UG 2022 — Mathematics Applied-Mathematics
Let X & Y be 2 invertible square matrix, then which of the following is true
(A) (AB)−1=A−1B−1
(B) (AB)−1=B−1A−1
(C) (AB)′=A′B′
(D) (AB)′=B′A′
Choose the answer from the options given below
Held on 11 Aug 2022 · Verified 13 Jul 2026.
(A) and (C) only
(C) and (D) only
(B) and (D) only
(B) and (C) only
Sign in to track your attempts and accuracy.
Sign in to keep a private note on this question. Nothing you write is ever public.
The demand function P for maximising a profit monopolist is given by P=274-x², while the marginal cost is 4+3x for x units of commodity. The consumer surplus is
If the total cost and total revenue of a company that produces and sells $x$ units of a particular product are $C(x) = 5x + 350$ and $R(x) = 50x - x^2$ respectively, then which of the following is/are the breakeven values: (A) $x = 10$ (B) $x = 25$ (C) $x = 45$ (D) $x = 30$ Choose the correct answer from the options given below:
If the random variable X follows the Poisson distribution such that P[X = k] = P[X = k+1], then the mean value of X is:
The supply function of a commodity is P = $x^3+2x+18$. When 4 units of commodity are sold , then producer surplus is:
If $y = e^{\frac{1}{2}\log(1+ \tan^2 x)}$, then $\frac{d^2y}{dx^2}$ is equal to:
Work through every CUET UG Applied-Mathematics PYQ, year by year.