| Subject | Date Asked |
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| differential equations | 11/9/2009 |
Q: please can u solve this differential equations.. 1, xydy/dx+y^2-x^2=o 2,y^2xdy+(x^3-4y^3)dx=o
A: Yeah, its all coming back to me now on how to really solve these things. 1. xyy' + y² = x². Note ...
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| differential calculas | 10/31/2009 |
Q: Differentiate the below with chain rule 3√((4-5x^2 )^4 ) ANSWER: ...
A: Then it was (4-5x²)^(4/3). This is (f(x))^(4/3) where f(x) = 4-5x². The derivative is ...
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| probability | 10/8/2009 |
Q: In a certain plant there are on an average 4 accidents per month.Find the probability that in a ...
A: This sounds like an exponential distribution with L=1/4 where L is for lambda. Since the ...
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| Ordinary Differential Equation | 10/6/2009 |
Q: Solve the differential equation y" - 8y' + 18y = 4e^(4x) + 3x^3 where the initial conditions are ...
A: The equation is y" - 8y' + 18y = 4e^(4x) + 3x^3. The simplest solution that can be found would be y ...
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| ordinary differential equations | 10/6/2009 |
Q: Tank T1 with 400litre capacity is initially half full with 100grams of salt dissolve in water. Tank ...
A: Again, I' not quite sure this is right, but here goes. You can look at it and tell me what you ...
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| differential equations | 10/5/2009 |
Q: question is: m((d^2y)/(dt^2)) + c(dy/dt) + ky = 0 if c^2=4mk find the geneal solution y(t). i got ...
A: I believe that to be correct. No, that can't be safely simplified on more. You could say the answer ...
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| Derivatives | 10/3/2009 |
Q: could u please help me out.. i know it sounds like a stupid question ut i'm realy confused! i have ...
A: It is learned in calculus, which is suppose to be taken before differential equations. The ...
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| differential equations | 10/1/2009 |
Q: question is: m((d^2y)/(dt^2)) + c(dy/dt) + ky = 0 if c^2=4mk find the geneal solution y(t). i got ...
A: If we had y" + 3y' + 2y = 0, the equation to solve would be done by finding the roots of x² +3x + 2 ...
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| Math | 9/23/2009 |
Q: I am having a problem with this equation. Can you please explain the last step to me I am having ...
A: By the way, I assume I am Mr. Wilson, and it should say, 'Private: Yes' (it currently says 'Private: ...
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| Homogeneous/Bernoulli differential equations | 9/22/2009 |
Q: Can a homogeneous differential equation be solved using the Bernoulli method? Will you get ...
A: Here are some sample Bernoulli differential equations dy/dx + y/x = x²y², dy/dx - y = x(³√y), ...
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| linear differential equation | 9/13/2009 |
Q: How can I solve the linear differential equation dx/dy + x = (y-3)/2 ? ANSWER: Divide both terms by ...
A: Sorry about that. I am too use to seeing dy/dx I sometimes skim it and assume thats what is there. ...
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| ODE | 9/10/2009 |
Q: solve the differential equatons 1. y'+2y=3x+5 2. sqrt(1-y^2)dx+y(sqrt[1-x^2]dy=0 3. e^-s(1+ds/dt)=1 ...
A: 1. y' + 2y = 3x + 5; let y = Ax+B, so y'=A. Put these back in the equation. Separate the constants ...
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| linear differential equation | 9/7/2009 |
Q: How can I solve the linear differential equation dx/dy + x = (y-3)/2 ?
A: Divide both terms by 2 and drop the parenthesis, giving dx/dy + x = y/2 - 3/2. Move all terms to ...
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