2a) Find the area of triangle PQR where P is (4, 2, 5), Q is (3, -1, 6) and R is (1, 4, 2) [1 2 31 2b) Investigate the singularity of the matrix M = |4 3 2 13 2 1. 2c) Find SV4 – x² dx ) s' xe*dx and 2d) Using Cramer's rule, solve the system of equations below x + 2y + 3z = 17 3x + 2y + z = 11 x- 5y + z = -5

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A: The given equations are,  21V1-20V2-V4=80 ................. (1) -40V1+49V2-4V3=0…

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A: IA is an invertible matrix To find det(AA-1)

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A: The answer is given as follows:

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A: We will find out the required solution.

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Q: and ß that solve the vector equation: a (²) + ( )= (²²) (21) B 3 28

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Q: 24. Let A [A₁, A2, A3] be a (3 × 3) matrix and set = 2 a) Show that B - 3 1 00 -1 ] 3 4 AB = [2A₁ +…

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A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

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