The probability density function of X is over [0, 2] . Compute each of the following.

(a) E ( X )

(b) SD(X )


(a) 8 / 5

(b)

Mathematics

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Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = 2yi + 3xj + 5z3k ; C: the portion of the plane 5x + 6y + 3z = 5 in the first quadrant

A.
B. 1
C. - 
D. 0

Mathematics

Simplify the expression. Assume that all variables are positive when they appear. ? 

A. 6  B. -2x C. 5x D. 6x2

Mathematics

Find the solution set of the equation. If the equation has no solution write ? and if the equation is an identity so state. = 

A. ?
B.
C.
D.

Mathematics

Solve the following equation. ? ?

A.
B. ?
C. ?
D. ?
E. ?

Mathematics