Mathematics

How do you double integrate this

I am able to get an answer but it is not a choice. Can you show me how to do it? Calculate the value of the double integral ∫∫(subscript A) [2xcos(x+y)] dxdy when A is the rectangle { (x,y): 0

Can i get help please dont understand this problem

Let f (x , y) = 32x^2-5y Find the equations of the level curves for the heights z given below. When z = 0, the level curve is y = ........................ When z = 1, the level curve is y = .......

Minimum value of this trigonometric function?! PLEASE HELP!

cos^2x - 6sinx cosx + 3sin^2x + 2 (a) 4 + root10 (b) 4 - root10 (c) 0 (d) none-cos^2(x) - 6sin(x)cos(x) + 3sin^2(x) + 2 = cos^2(x) + sin^2(x) + 2sin^2(x) + 2 - 6sin(x) cos x = 2sin^2(x) + 3 - 3sin

Algebra II: Factoring Differences of Squares and Perfect Square Trinomials

Ok Im going to take out each different type of problem, if you could show me how to do this step by step, itd be appreciated. 1.a^2 - 9 1.x^2 + 16x + 64-for the first ... it factors to (a-3)(a+3) be

Say you wanted to know how many times 247 goes into 8491 without a calculator

what is the easiest way to figure this out without having to go ok 247 x2 = ? , 247 x5 = ? , etc etc. Is there some trick you can use in your head to get in the ball park of the number?-You can estima

Calculus ab frq help

2002 ap calc AB form B #2. i have to find the minimum so i set: 1-3e^(-0.2 square root of t)=0 how do you solve for t? the answer is (5ln3)^2. please show me step by step on how to solve it. if you

Find the equation of the plane, given parametric equations

The parametric equations: x = -1 + 3t y = 5 + 2t z = 2 + t and passes thru (2, 4 ,-1) what is the equation of the plane????-We need to find two vectors that are parallel to the plane. First vector

What is the derivative of this

find derivative of[(sec x)^3 + (sec x)(tan x)^2 ]-By chain rule d/dx f(g(x)) = f(g(x)) and product rule d/dx fg = fg + fg, noting that d/dx sec(x) = sec(x)tan(x) and d/dx tan(x) = sec²(x), we obtain:

Log problem...please include some detail so I can do the others

log (base 3) X + log (base 3) (x+9) = 5-the sum of logs is the log of the product... log (base 3) X + log (base 3) (x+9) = 5 log [base 3] [x(x + 9)] = 5 x^2 + 9x = 243 x^2 + 9x - 243 = 0 use the

Can someone please help solve this probability math problem please

A simple dartboard has 3 areas. The main board has a radius of 8 inches, there is a circle with a radius of 5 inches, and the bullseye has a radius of 1 inch. What is the probability of a random dart

How would I find the exact length of the diagonal given the length is 8 and the width is 4

pythagorean theorem! a^2 + b^2 = c^2. a and b are the legs (length and width). so plug those into the equation. Find the sum of that, and square root the answer to get the length of c, the hypotenuse/

Algebra 2 Word Problem

a mobile phone company charges $30 for up to 500 minutes of use each month. each additional minute over 500 minutes cost $0.40 per minute. A. Write a piecewise function to show the cost of using x mi

Suppose that Φ: R ⇒ S is a ring homomorphism and x belongs to R is idempotent. Show Φ(x) is idempotent in S.

I know that we have to show (Φ(x))^2 = Φ(x) and that x is idempotent if x^2 = x, but I dont know where to go after that-Given an idempotent x: Φ(x) = Φ(x^2), since x = x^2 .......= Φ(x) Φ(x), since

10 points ! Statistics help ! Hypothesis Testing

According to the American time use survey, the typical American spends 154.8 mins (2.58 hours) per day watching television. Do internet users spend less time each day watching television? A survey of

Calculus Infinite Series Problem

Does it converge or diverge? ∞ . . . . NlnN ∑ . . . ----------- N=1 . . . N^2 I tried the Nth term test, but the limit equals zero, so I cant prove divergence.-Using the integral test, note that ∫(1