MATLAB Matlab Problem: Integrating & Multiplying Functions w/o File

[oby7842]

hellow everyone, its my first post. In my problem i have a function f=f(x)... inned to integrate it from 0 to a ...I need to multiply f with some other function g(x) and differentiate it...i don't want to use another function file...i tried inline function command but it can't multiply with g(x) and integrate it...

I need some suggestion badly. Thanks

omar Bin Yusuf

 

[h2oski1326]

For symbolic integration and differentiation look into the functions 'int' and 'diff'.

To do this numerically, look into 'trapz' or 'quad' to integrate. Numerical differentiation is simply:

\frac{\Delta x}{\Delta y} = \frac{x_{i+1} - x_{i}}{y_{i+1} - y{i}}<br /> <br /> <br />

 

[Altairs]

i don't want to use another function file

Any specific reasons for this ? there is a reason MATLAB asks for separate file for better integration techniques and besides it makes job easier and cleaner.

Regards.