Suppose Cov(X,Y) = 65. What is Cov(0.46X, 0.39Y)?

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A:

Q: Suppose that Var(X) = 742.23, Var(Y) = 8890.5, and Cov(X,Y) = 2191.72. What is Var(.51X + .49Y)?

A: The objective of the question is to find the variance of the linear combination of two random…

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A: Using Substitution method,

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A: Consider the given definite integral.

Q: Evaluate dx. /25 – x²

A: First of all, let x = 5 sin (u) and differentiate w.r.t x on both sides of the equation and find dx.

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A: Given integral is I=∫-∞∞e-x2L2dx This type of integral cannot be done using elementary integration…

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A: Right endpoint method: The area under the curve f(x) on the interval [a, b], withn rectangles is…

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A:

Q: •B Find 2xVx- 5 dx, where B > 3.

A:

Q: (1,2) D (1.1) x+3y=7 (4.1)

A: Step 1: the distance between two points is d2=√((x2-x1)2+(y2-y1)2) Step 2: find the distance of all…

Q: proke that lose ch?e %3D (0nsiden

A: To prove that Cosech^2x=coth^2x-1

Q: +1 dx -8 Evaluate

A:

Q: Compute Au, where A Au = = 1 (56) 4 and u= (9).

A: The simple matrix product..

Q: Integrate x² √6 +25 1 dx + C

A:

Q: Let X- N(10, 5'). What is P(X > 3)?

A: Provided data are,

Q: 1. A voltage V being supplied to an electrical circuit at time t is V=100sin50++50sin100+. Find the…

A: We have to find the maximum and minimum values of V over one period.

Q: Differentiate the function. u' +71

A: Topic = Derivative

Q: Eveleate inter ssin(2x) dx

A: We can find the integration as below.

Q: 1. Find dx. x2 + 64

A: I = ∫1x2x2 + 64 dxLet x = 8 tanθ     dx = 8 sec2 θ dθx2 + 64 = 64 tan2θ + 64                 = 64…

Q: d 0.6 56. 2.8x -3. dx

A: Differentiate

Q: Why is it (2n-1)*pi/2. Can you please explain it to me. Thank you

A: We have in the previous line