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Mathematics 7 Online
OpenStudy (mendicant_bias):

Alright, integrodifferential equation attempted to be solved. First time attempting to solve one, posted below in a moment.

OpenStudy (mendicant_bias):

\[f(t)=\int\limits_{0}^{t}(t-\tau)f(\tau)d \tau=t\]

OpenStudy (mendicant_bias):

General form for Volterra Integra Equation:\[f(t)=g(t)+\int\limits_{0}^{t}f(\tau)h(t-\tau)d \tau\]

OpenStudy (mendicant_bias):

@sidsiddhartha (Just dropping you a line, don't need help yet but mentioning the problem so you have an idea of it if you want to help)

OpenStudy (mendicant_bias):

Damn, just wrote up a bunch of stuff in LaTeX, web browser problems wiped it, made the identification that h(t-tau)=(t-tau), h(t)=t

OpenStudy (mendicant_bias):

\[F(s)=F(s)\frac{1}{s^2}\] http://thumbpress.com/wp-content/uploads/2013/05/I-Have-No-Idea-What-Im-Doing-1.jpg

OpenStudy (sidsiddhartha):

lol

OpenStudy (mendicant_bias):

Subtract g(t) from the other side? Really not sure what to do, focused *way* too much time on basic Laplace and inverse and heaviside, just now basically learned about these; how should I approach this, solving for f(t)?

OpenStudy (mendicant_bias):

\[f(t)=\int\limits_{0}^{t}(t-\tau)f(\tau)d \tau-t\]Right direction?

OpenStudy (mendicant_bias):

\[F(s)=F(s)\bigg(\frac{1}{s}\bigg)-\frac{1}{s^2}\]

OpenStudy (mendicant_bias):

\[\bigg[1-\frac{1}{s}\bigg]F(s)=-\frac{1}{s^2}\](Are these the right steps? I mean, Iegitimately don't know what I'm doing, I'm just solving for F(s) right now algebraically)

OpenStudy (sidsiddhartha):

ok wait checking from first

OpenStudy (sidsiddhartha):

just a little mistake

ganeshie8 (ganeshie8):

Interesting, so basically you took the laplace transform both sides and you gona solve F(s) and finally take inverse. is that the strategry here ?

OpenStudy (sidsiddhartha):

\[L[\int\limits_{0}^{t}(t-\tau)F(\tau)d \tau]=\frac{ f(s) }{ s^2 }\] is'nt it?

OpenStudy (sidsiddhartha):

yes it like a RLC circuit \[r.i(t)+L \frac{ di(t) }{ dt }+\frac{ 1 }{ C }\int\limits_{0}^{t}i(\tau)d \tau=v(t)\\V(s)=R.I(s)+s.L(s)+\frac{ I(s) }{ Cs }\] @ganeshie8

OpenStudy (mendicant_bias):

Yeah, my bad, that looks right

OpenStudy (sidsiddhartha):

yeah:)

OpenStudy (mendicant_bias):

\[F(s)=\frac{F(s)-1}{s^2}\]

OpenStudy (sidsiddhartha):

L-C,RLC circuits form intego differential equation|dw:1416856719368:dw|

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