golnaz

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These are questions asked by golnaz

solving an equation...

Asked: golnaz 40 Product: Maple

June 01 2019

1 3

how can i find x in terms of y(x)

y(x)= integral exp(-x)/(sqrt(exp(-2 x) + a) - sqrt(a)) dx = e^x (sqrt(a + e^(-2 x)) + sqrt(a)) - log(sqrt(a + e^(-2 x)) + e^(-x)) + constant
(assuming a complex-valued logarithm)

how to solve this differential eq?...

Asked: golnaz 40 Product: Maple

May 29 2019

1 4

Hello everybody

can anybody help me solve this differential equation please?

d^2y(t)/dt^2-dy(t)/dt*1/y(t)=a*y(t)^2

solve an integral...

Asked: golnaz 40 Product: Maple

January 17 2018

1 11

Hello every body

i want to solve the following integal but i cant please help.

integral sqrt(a l (l - log(t) - 1) log^(l - 2)(t)×(1 - a×t/(a l log^(l - 1)(t)))/t^2) dt

plot 2 functions versus each other...

Asked: golnaz 40 Product: Maple

August 06 2017

1 0

Hello every body i need help with my program. how can i plot r&s versus each other?

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ode1 := -(diff(Omega(z), z))+Omega(z)*((3*(1-2*`ε`*h*sqrt(r)/H(z)-Omega(z)+2*Omega(z)^(3/2)/(3*n)))*(1+h*`ε`*sqrt(r)/sqrt(h^2*r+H(z)^2*(1-2*`ε`*h*sqrt(r)/H(z))))-2*sqrt(Omega(z))/n)/(1+z) = 0:

ode2 := -(diff(H(z), z))-(3*H(z)*(1/2))*(1-2*`ε`*h*sqrt(r)/H(z)-Omega(z)+2*Omega(z)^(3/2)/(3*n))*(1+h*`ε`*sqrt(r)/sqrt(h^2*r+H(z)^2*(1-2*`ε`*h*sqrt(r)/H(z))))/(1+z) = 0: