Dec 3, 2008 · The base of S is an elliptical region with boundary curve 9x^2 + 4y^2=36. Cross sections perpendicular to the x-axis are isosceles right triangles with hypotenuse in the base. Find the voume …

Apr 29, 2014 · Find arc length given y = x^(3/2) - 1 over [0,1]. Let INT be the integral symbol. I was able to construct the integral but after plugging the limits x = 0 to x = 1, I get a different answer every time. …

Jun 1, 2009 · I am doing some integration drills and I am stuck with this one: ∫ 1 9 4 x 2 d x the solution is as follows: u = 2 3 x d u = 2 3 d x Step 3: 1 3 ∫ 1 1 (2 x 3) 2 d x = 1 2 ∫ 1 1 u 2 d u = 1 2 s i n 1 (2 3 …

Feb 28, 2008 · 1. Find all values of x (if any) where the tangent line to the graph of the function is horizontal. y = 2 + 8x - x^2 2. Find all points of the graph of f(x) = 3x^2 + 9x whose tangent lines are …

Sep 9, 2012 · If x^4 + 4x^3 + 6px^2 + 4qx + r is divisible by x^3 + 3x^2 + 9x + 3, the value of (p + q) r is? anybody help me on this?..

Oct 22, 2007 · Hmm, I'm getting a wrong answer for part b. Isn't velocity the first derivative of the position funciton, so if we know the time we can use this equation: y = 12.1-9.8x which is derived …

May 27, 2015 · The inverse transform of 9 s 2 + 9 = (3) (3 s 2 + 3 2) should be 3 sin (3 t) . So the solutions should be x (t) = cos (3 t) 3 sin (3 t), y (t) = 4 cos (3 t) 3 sin (3 t) . That looks to check out as …

Oct 24, 2008 · V = 9x^3, and V is given as 243m^3. 9x^3 = 243. Divide both sides by 9. x^3 = 27. Take the cube root of both sides to get: x = 3. So, the height is 3m, and the length and width are both …

Feb 11, 2010 · A volume is described as follows: 1. The base is the region bounded by x = y 2 + 8 y + 21 and x = y 2 18 y + 93 ; 2. Every cross section perpendicular to the y -axis is a semi-circle. Find the …

Apr 20, 2011 · I have a word problem which I did all the arithmetic for but what do I do with the x I solved for? Here it is: A man is on the bank river, which is 1 mile wide. He wants to travel to a town on the …