how can i integrate this function ?

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elham kreem
elham kreem 2018-3-10
评论： elham kreem 2018-3-14
Hello everybody , i have the bellow function , i want to integrate it from a to b
but the result is not complete , there is no result for a , the code for this
function is :
syms y
syms bx
syms v
syms a
syms b
% c is constant
f= y / ((bx - y)^2/v + 1)^(v/2)
z = int ( f , a,b , y )
***
the result after i run it in matlabe is :
z =
-(y*(b - y))/((bx - y)^2/v + 1)^(v/2)

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回答（1 个）

Steven Lord
Steven Lord 2018-3-10
You're close. Look at the documentation for the int function. Pay close attention to the order of the input arguments and what each input argument represents.
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Torsten
Torsten 2018-3-12
This indicates that MATLAB was not able to find an analytical expression for the integral. You will have to insert numerical values for b and v, numerical values for the limits a and b and use "integral" for a numerical approximation of the integral.

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