solve system of equations.

X2-4Y2+7=0 3X2+Y2=31       X+Y+1=0 X2+Y2+6Y-X=-5

Find the value of x so that the area under the normal curve is between...

EDIT: μ = 200 and σ = 25.   1. Find the value of x so that the area under the normal curve between μ and x is .4525 and the value of x is less than μ.   2. Find the value of x so that the area... more

Find the Power Series in terms of sigma:

Find the Power Series of f(x) = x^5/(4-x^3) in terms of sigma.

11/11/13

if you were to find the cos75°, which formulas could you use? Would you get the same answer using both methods? How would you know?

 if you were to find the cos75°, which formulas could you use? Would you get the same answer using both methods? How would you know?   please explain

09/07/13

what is 7x+2/6x+3 - x-1/6x+3 substract the rational expressions

what is the answer

08/22/13

How to differentiate x^sinx ?

08/03/13

is the sun a planet

I was wondering if the sun is a planet?

Find the general solution?

Find the general solution of x^2*y"+4xy'+2y=0 that is valid in any interval not including the singular point. Answer:... more

07/17/13

Do the equations x = 4y + 1 and x = 4y – 1 have the same solution? How might you explain your answer to someone who has not learned algebra?

Do the equations x = 4y + 1 and x = 4y – 1 have thesame solution? How might you explain your answer to someone who has not learnedalgebra? How do you solve? This is for new learners in Algebra.

07/13/13

Is differential geometry pure math?

Is this course pure math? Is it college math or graduate level math? Do physics and engineering majors need this course? What's the name of the textbook for this course that MIT uses?

remainder 43, quotient 344, dividend 43 043

The question is: The remainder is 43. The quotient is 344. The dividend is 43 043. What is the divisor?

07/08/13

Find approximate values?

Find approximate values of the solution of y'=3+t-y, y(0)=1 at t=0.1, 0.2, 0.3, and 0.4 using the Euler method with h=0.1.

07/04/13

Solve the initial value problem?

Solve the initial value problem y'+2y=g(t), y(0)=0, where g(t)={1, 0≤t≤1, 0, t>1.

07/04/13

what is 20 divided by square root 15?

it is a math problem

07/03/13

Show that an equation is homogeneous?

Show that (x^2+3xy+y^2)dx-x^2*dy=0 is homogeneous.

07/03/13

Show that this equation is homogeneous?

Show that dy/dx=(4y-3x)/(2x-y) is homogeneous. xv=y v'x+v=y' v'x+v=(4y-3x)/(2x-y)

07/03/13

find the inverse of f(x)=1/x^5

i do not know how to do this. can someone please show me the steps to solving this problem.

07/02/13

Can you find this integral?

∫ (e^(t/2))(2cos(t))dt.

06/29/13

Find the solution of the given initial value problem?

Find the solution of the given initial value problem for ty'+2y=t^2-t+1, y(1)=1/2, t>0.

Find the general solution?

Find the general solution of y'+3y=t+e^(-2t).

06/25/13

Find the general solution?

Find the general solution of dy/dx+3y=e^3x.

06/21/13

how do you factor the expression 4x²+29x+30

factor the expression

Solve the differential equation?

Solve the differential equation y^(4)-5y"-36y=0. r^4-5r^2-36 (r^2-9)(r^2+4) r=3, -3, 2i, -2i y=c1*e^3x+c2*e^-3x+c3(cos(2x))+c4(sin(2x)) Is that the right answer? And can someone give me some... more

06/15/13

Compute the circulation of the vector field?

Compute the circulation of the vector field H=<-y^3, x^3> over the boundary of the region D={x^2+y^2<=1, y>=0}.

Find all integers k so that the trinomial can be factored. 3x^2+kx-1

i don't get what i'm supposed to do

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