Mathematics

TI-84 Plus Calculator help?!

I was trying to figure out how to input X in my calculator so I could graph a function, but it kept putting theta (I think thats how you spell it). I think it was in the wrong mode. But I dont know ho

Need Pre-calculus Help?!

Alex and Ben undertake a job for $800. This amount is to be distributed in proportion to the work done. Alex can do the job in six days, and Ben can do it in eight days. With assistance from Chris, th

Prove that x^n = e is a subgroup of G

Let G be an Abelian group with identity e and let n be some fixed integer. Prove that the set of all elements of G that satisfy the equation x^(n) = e is a subgroup of G. Give an example of a group G

Can anyone Simplify 11+8

This one has me stumped. :/ Ill chose the correct answer and reward quickly! :D-19-19. Because 11 and 8 are like terms.

Please, help; how do you determine if there is a stretch or compression in a function without the equation

Hi, we are given a graph. say it is y = 6 (x-3)^2 +5 When I look at the graph, I understand how to find out the 3 and 5 but how would I determine that theres a vertical stretch by a factor of 6, when

How do You INTEGRATE cos(7-2X)dx

i keep getting the answer wrong :(-Let u = cos(x) du = -sin(x) dx -[-sin(x) dx] / [cos(x)]² -du / u² 1/u + c 1/cos(x) + c sec(x) + c-int(cos(7 - 2*x), x) = (1/2)*sin( - 7 + 2*x) + C

Any easy way to solve this equation

(x-1)x(x+1)(x+2)=24-(x-1)x(x+1)(x+2)=24 x(x+1).(x+2)(x-1) = 24 (x^2 + x) (x^2 + x -2) = 24 (1) t= x^2 + x (1) => t(t-2) = 24 => t^2 - 2t = 24 => t = 6 or t = -4 => x^2 + x = 6 or x^2 + x = -4 => x =

Integrate xdx/((l + d -x)

Youre supposed to get - (d + l)ln( -d -l + x) -x. Please integrate this step by step.-Assuming L and d are constants, treat them as numbers,then x/(L+d-x)is an improper fraction, So simplify by lo

How would I solve this problem

3x+4y-4y y y here we go :)

What does 1-2+3...-98+99-100 make

You can write this as follows (1+3+5+.............99)- ( 2+4+6+..............+98+100) So now here we have two arithmetic The sum of the first odd numbers up to and including 99 minus the sum of the f

Help with linear(?) equations please!

heres the problem: x - 2y = 3xy + 1 & x = -2 the answer i got was: y= x - 2/1. is it wrong? i just randomly solved it as i went along because im kinda lost..can you show me step by step on how to do t

Finding the 6 trig functions

In school right now were working on finding the 6 trig functions. Sin, Cos, Tan, Sec, Cot, and Csc. I pretty much know how to do it except when working with fractions.The problem is this Find the valu

Derivate this one √(2t+1)

(2t+1)^(1/2) => 1/2(2t+1)^(-1/2) => 1 /(2√(2t+1)) Show steps-d/dt [ (2t+1)^(1/2) ] . . . apply the chain rule 1/2 * d/dt [ 2t + 1 ] * (2t + 1)^(-1/2) . . . d/dt 2t+1 = 2 1/2 * 2 * (2t + 1)^(-1/2)

Coordinate geometry question..help me

The difference between the distance of point P from the point (4,0) and the distance of Pfrom the point (-4,0) is 2(surd10) units.Show that the locus of P is the hyperbola x^2/10-y^2/6=1 Show that th

How do I do this math problem

3√7/12 (Its written like this on the sheet: http://imageshack.us/photo/my-images/841… (Dont say DO YOUR HOMEWORK YOURSELF! Its not homework. Its just extra studying for a test.) Thanks!-I think they