Let 2a > -1, If the area of the region of the plane defined
by {(x,y)...
Let 2a > -1, If the area of the region of the plane defined
by {(x,y) : x ≥ 0, 2y-x ≥ 0, ax+y-3 ≤ 0} is equal to 3, then the
value of a, lies in
Answer key: (0.75, 1.5)
1. The base of a solid is the region in the x-y plane bounded by
the curve y= sq rt cos(x) and the x-axis on [-pi/2, pi/2] . The
cross-sections of the solid perpendicular to the x-axis are
isosceles right triangles with horizontal leg in the x-y plane and
vertical leg above the x-axis. What is the volume of the solid?
2. Let E be the solid generated by revolving the region between
y=x^3 and y= sr rt (x) about...
let R be a region bounded by x = 0 and x =1 and y = 0 and y = 1.
Suppose the density is given by 1/y+1.Notice that R is denser
near the x axis. As a result we might
expect the centre of mass to be below the geometric
center(1/2,1/2). Also since the density does not depend on x we do
expect moment of inertia about the x axis to be 1/2. verify the
moment of inertia about...
Let A = R x R, and let a relation S be defined as: “(x1, y1)
S (x2, y2) ⬄ points (x1, y1) and (x2, y2)are 5 units
apart.” Determine whether S is reflexive, symmetric, or transitive.
If the answer is “yes,” give a justification (full proof is not
needed); if the answer is “no” you must give a
counterexample.
Let f(x, y) = 2x^3 − 6xy + 3y^2 be a function defined on
xy-plane
(a) Find first and second partial derivatives of.
(b) Determine the local extreme points of f (max., min., saddle
points) if there are any.
(c) Find the absolute max. and absolute min. values of f over
the closed region bounded by the lines x = 2, y = 0, and y = x
a) Find the area of the region bounded by the line y = x and the
curve y = 2 - x^2. Include a sketch.
Find the volume of the solid created when rotating the region in
part a) about the line x = 1, in two ways.
Let the joint pmf of X and Y be defined by f (x, y) = c(x + y),
x =0, 1, 2, y = 0, 1, with y ≤ x.
1. Are X and Y independent or dependent? Why or why not?
2. Find g(x | y) and draw a figure depicting the conditional
pmfs for y =0 and 1.
3. Find h(y | x) and draw a figure depicting the conditional
pmfs for x = 0, 1 and2.
4....
Let the joint pmf of X and Y be defined by f (x, y) = c(x + y),
x =0, 1, 2, y = 0, 1, with y ≤ x.
1. Find g(x | y) and draw a figure depicting the conditional
pmfs for y =0 and 1.
2. Find h(y | x) and draw a figure depicting the conditional
pmfs for x = 0, 1 and2.
3. Find P(0 < X <2 |Y = 0), P(X ≤ 2 |Y...
Let R be the region inside x ^2 /9 + y^2 /25 = 1, with x ≥ 0.
(That is, R is the right-hand side of the ellipse below.) (a) (15
pts) Use the change of variables x = 3u, y = 5v to transform ∫ ∫ R
x dxdy to a polar coordinate integral. 3 −5 5 R (b) (5 pts)
Evaluate the polar coordinate integral