08/05/13

What comes after partial differential equations?
What math comes after partial differential equations for physics and electrical engineering majors?
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08/05/13

Find the inverse Laplace transform?
Find the inverse Laplace transform of F(s)=(2s+2)/(s^2+2s+5). Answer: f(t)=2e^-t*cos 2t
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08/05/13

y=x^2-2x+3?
answer for math questions about parabolas
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08/04/13

Find the inverse Laplace transform?
Find the inverse Laplace transform of F(s)=2/(s^2+3s-4). Answer: f(t)=(2/5)e^t-(2/5)e^-4t Never mind, I now know how to do it. But can someone tell me how to find the answer on Ti-89 calculator?
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08/04/13

Light's mass
Light have mass or not ? If not then prove it ! If yes then prove it!
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08/03/13

Find the Laplace transform?
Find the Laplace transform of f(t)=te^at. Answer: F(s)=1/(s-a)^2, s>a
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08/03/13

Find the Laplace transform?
Find the Laplace transform of f(t)=cos at, where a is a real constant. Answer: F(s)=s/(s^2+a^2), s>0  
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08/03/13

Find this improper integral?
Find the improper integral of te^-st dt from 0 to b where the limit of b approaches to positive infinity.
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08/03/13

is the sun a planet
I was wondering if the sun is a planet?
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07/25/13

solve for y using the following matrix equation
|x+y|=|13| |x+4|=|14|
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07/25/13

use cramer's rule to solve for y
x+4y-2z=3 x+3y+7z=1 2x+9y+z=8
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07/25/13

My question concerns the steps and logic involved in graphing the square root of the negative of the variable x. Please see below.
According to the publication I've been using and an on-line function-graphing website, the graph of the function f(x)=the square root of (minus x) starts at the origin and extends up... more
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07/24/13

Find a particular solution?
Use the method of variation of parameters to find a particular solution of y"-5y'+6y=2e^t. Answer: Y(t)=e^t r=2, 3
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07/24/13

Should I use U-substitution for finding the Integral of X^2/(x^2 + x-6)
I am trying to understand what's best to start this problem. 
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07/22/13

Find the general solution?
Find the general solution of y"+9y=(t^2)(e^3t)+6. r^2+9=0 r=±3i Answer: c1cos 3t+c2sin 3t+(1/162)(9t^2-6t+1)e^(3t)+2/3 Please show the work step by step.
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07/22/13

4y-x=27 2x+7y=21
Use the substitution method to solve this system.
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07/22/13

what is the inverse function of f(x)=6x+11
I just need help >.< I cant solve this I just need someone to help me. 
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07/21/13

Find the general solution?
Find the general solution of y"-2y'-3y=3e^2t. Answer: c1e3t+c2e-t-e2t  
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07/20/13

Find a second solution?
Use the method of reduction of order to find a second solution of t2y"-4ty'+6y=0, t>0; y1(t)=t2. Answer: y2(t)=t3  
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07/19/13

Mathematica Project - Position, Velocity, and Acceleration - plotting
Mathematica Project - Position, Velocity and Acceleration A rocket is fired vertically upward into the air from a launching platform 100 ft above the ground. The platform is then retracted, and... more
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07/17/13

How can I learn programming?
I don't know anything about it but I want to learn it so I can build any electronic devices I want with the knowledge. Can I learn it online for free? What programming language must I choose?
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07/17/13

Find the Wronskian?
Find the Wronskian of e^2t, e^(-3t/2). W(f, g)=fg'-gf' -3/2e^2t(e^-3t/2)-e^(-3t/2)(2e^2t) =-3/2e^(7t/2)-2e^t/2. Am I right?
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07/17/13

is the tutoring online only?
will the tutor come to my home?  
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07/15/13

solve for x
matrice of |3    x|                |-5  2x|                
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07/15/13

what is the equation of the line perpendicular to Ax + By = C through point (a,b)?
what is the equation?  Then, after that equation, how do I find the point where that line and Ax + By = C intersect?
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