Mathematics
Favorites|Homepage
Subscriptions | sitemap
HOME > Mathematics > Mathematics

Mathematics

Find a unit vector perpendicular to a = (-3, 6, 2)

thanks in advance!-A vector, v, perpendicular to a will have the following property: v · a = 0 If v has coordinates [x, y, z] then: [x, y, z] · [-3, 6, 2] = 0 -3x + 6y + 2z = 0 Since we only need

How do I work this vector question

A plane is on a bearing 35 degrees south of west at a speed of 400 mph. A wind is blowing in the direction 10 degrees east of south at 60 mph. Find the actual velocity vector of the plane. I have spe

Differential equations

Can you guys just check my answers? Thanks. Suppose the rate at which the volume in a tank decreases is proportional to the square root of the volume present. The tank initially contains 25 gallons,

More math help guys?? SOlve these promblems

1. You own 6 cassettes and are taking 4 on vacation. In how many ways can you choose 4 cassettes from 6? A. 1 B. 720 C. 60 D. 24 2. A single standard six-sided die is rolled. Find the probability

How to integrate ((x^2)-1)^-1.....help me plizzz....

Note that: (x^2 - 1)^(-1) = 1/(x^2 - 1). Since x^2 - 1 factors to (x + 1)(x - 1), we can use Partial Fractions to write: 1/(x^2 - 1) = A/(x + 1) + B/(x - 1), for some A and B. Multiplying both sides

Can someone please help me with this maths question

Hi! im really stuck on this question to do with optimisation of constrained functions. I know im meant to use lagrange multipliers method, but i dont know how to start this one of... id really appreci

Probability Help Please MATH

Three research departments have 8, 7 , 9 andmembers, respectively. If each department is to select a delegate and an alternate to represent the department at a conference, in how many ways can this be

What is the volume when the region is revolved about the x-axis

the region is bounded by y = 4 - x^2, the x-axis, and the y-axis. i tried 512pi/15 and that was wrong.would it be 256pi/15?or something else?-The axis of rotation is horizontal, so the washer method

Find the inverse of A.

need help! Find the inverse of A. A = the following ... ------ 1 ---- -2 ----- -1 ------ 3 ---- -5 ----- -6 ----- -1 ----5 ----- -7-set up a matix: [1 2 -11 0 0and use row reduction to get the left

URGENT!Write the polynomial 3x(x-4)(x+1) in standard form.Then classify it by degree.Do I just factor?Help

3x(x-4)(x+1) (3x^2-12x)(x+1) 3x^3+3x^2-12x^2-12x 3x^3-9x^2-12x This is a cubic polynomial which goes up as x gets bigger-URGENT!Write the polynomial 3x(x-4)(x+1) in standard form.Then classify it by

Need help finishing a kite proof

Ok so it goes like this Given Kite ABCD and AB congruent to CB , AD Congruent to CD, and the diagonals intersect at point E. Prove triangle AEB congruent to triangle CEB. Im suck trying to figure out

Can someone please solve these

Please with an explanation, link is below. Theyre absolute values and inequalities. http://imageshack.us/f/194/absolutev.png/ Id really appreciate it.-2, 5m+2 = 3 or -3 5m = 1 or -5 m = 1/5 or -1--

Integral of (5x^2-10x+3)/(x^3-3x^2)

A step-by-step answer would be awesome! Im studying for an exam >_-Since the denominator factors to x^2(x - 3), split the integrand up into Partial Fractions. (5x^2 - 10x + 3)/(x^2 - 3x^2) = A/x + B/x

Calculus: Find the area of the surface generated by....

x=t^2+1/(2t) y=4t^(1/2), for 1/sqrt2≤t≤1 about the y axisi know the formula is ∫ (a to b) 2π x sqrt((dx/dt)^2+(dy/dt)^2) i plugged in the stuff and i found the integral to be hard to solve can some o

Calculus problems: Find the limits

Limit as x goes to NEGATIVE infinity (x^4 + x^5) Limit as x goes to infinity (x+x^3+x^5)/(1-x^2+x^4) PLEASE HELP ME SOLVE THESE PROBLEMS. THANK YOU!-x goes to NEGATIVE infinity (x^4 + x^5) =lim x^
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .