Find the area of the surface. The part of the plane z = 7+ 2x + 3y that lies above the rectangle [0, 5] x [1,4]

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.1: Parabolas
Problem 40E
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Find the area of the surface.
The part of the plane z = 7+ 2x + 3y that lies above the rectangle [0, 5] x [1,4]
Transcribed Image Text:Find the area of the surface. The part of the plane z = 7+ 2x + 3y that lies above the rectangle [0, 5] x [1,4]
Suppose X and Y are random variables with joint density function.
f(x, y) = {0.16
[0.1e-(0.5x+0.2y)
(a) Is f a joint density function?
Yes
O No
if x ≥ 0, y ≥ 0
otherwise
(b) Find P(Y ≥ 5). (Round your answer to four decimal places.)
Find P(X ≤ 3, Y ≤ 4). (Round your answer to four decimal places.)
(c) Find the expected value of X.
Find the expected value of Y.
Transcribed Image Text:Suppose X and Y are random variables with joint density function. f(x, y) = {0.16 [0.1e-(0.5x+0.2y) (a) Is f a joint density function? Yes O No if x ≥ 0, y ≥ 0 otherwise (b) Find P(Y ≥ 5). (Round your answer to four decimal places.) Find P(X ≤ 3, Y ≤ 4). (Round your answer to four decimal places.) (c) Find the expected value of X. Find the expected value of Y.
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