Discrete Mathematics Explain Steps  If no two couples sit together, how many different ways may n couples sit in a row?  Derangement is a permutation of π ∈ Sn that has none of the fixed points, or The components are still in their first placement. How many different derangements of [n] are possible?

Q: ln p= a + b/t + cln(t) + dt^2 Is this equation linear or non linear

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Q: Obtain the Power Series solution of the differential equation y"-3y'+2y = 0.

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Q: 22. A surface has an equation of z² + 2x² + 3y² = 4. Through Stoke's Theorem, evaluate the surface…

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Q: understand how

A: Please cheek the answers in next step. This is a follow up question.

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Q: 23. A skier moves across a rolling snowy landscape from south to north. Arriving with a downward…

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Q: k=1 Find the 15) 18 k=0 convergence se- (-1)kk k(k+1)

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Q: the differential equation 3(3x^2 + y^2)dx - 2xydy = 0 is homogeneous of what degree?

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Q: What if a1=16

A: Same procedure as before.

Q: Problem 7: Let f(z) = Σo(n³/3¹)zn. Compute each of the following a.) f(6)(0) c.) f₁²-1 f(z)e-dz b.)…

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