solving an equatin... please help me

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Hosin Lee 2019-5-22

关闭： MATLAB Answer Bot 2021-8-20

Pd = @(u)quadl(@(w)f(u,w), Yb, 1000*Yb)

I want to know the value of u when Pd is 0.8. How do I write the code??

Please help me.... Yb is 6.

darova 2019-5-22

Did you try fsolve()?

Hosin Lee 2019-5-23

I can't understand the fsolve.

Can you code it for me please?

此问题已关闭。

darova 2019-5-23

Also you can try fzero()

f = @(a,x) sin(a*x)./x;
F = @(a) integral(@(x)f(a,x),0,7)-0.8;
% a = fsolve(F,2);            % didn't work
a = fzero(F,2);
F(a)

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