Find the LU factorization of A A= Ly To solve the system -2 -4 4 -7 4 -12 11 66 using the LU factorization, you would first solve || and then solve Ux [12] -81x= 13 -4 Find the solution x = -4 -7 -12 -8 11

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A: To determine the coefficient of x2wa3b in the expansion of x+y+w+a+b7.

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Q: 7. How many terms are there in the multinomial expansion of (x₁ + x₂ + ... .+x)"? ******..

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A: Using By Parts rule of integration.

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A: