## 40 Reputation

11 years, 319 days

## why fsolve doesn't work...

Maple 2021

Hi

I'd like to know that why in the attachment "fsolve" does not work?

How can I evaluate the value of "A" in my file?

 > restart:
 > N := 60: L := 10: a := 2*10^(-12):
 > eqn:=ns=1-((((N/A)+((A*L)^(L/(1-L))))^((1-L)/L))/(A*L))*(2+(a*exp((((N/A)+((A*L)^(L/(1-L)))))^(1/L)))/((A*L*(((N/A)+((A*L)^(L/(1-L))))^((L-1)/L)))+((a*exp((((N/A)+((A*L)^(L/(1-L)))))^(1/L)))))):
 > seq(fsolve(eqn,A),ns=[0.9603,0.9647,0.9691]):
 >

## solve an equation by maple...

Maple

Hi

how can I find e^(-x) with respect to x in this relation

e^x (1 + sqrt(1 + e^(-2 x))) - sinh^(-1)(e^(-x))=x

## solving an integral analytic...

Maple

Hi

how can i solve this integral in term of x

int(d*e^(-b*x)/(((a*e^(-2*b*x)+c*e^(-4*x)))))

## solving an integral...

Maple

Hi

how can i find the answer if this integral analytically

int(exp(-b*x)/(exp(-2*b*x)*a+exp(-4*x)),x);

## dsolve an equation...

Maple

Hi

how can i solve this

dx+4*x*dy/y = dy*a*y^(-6*b-1)

to find x in terms of y

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