How to calculate a definite integral with Planck's law function

Hello, I have to calculate a definite integral of the Planck's law in the interval between two certain wavelength values. In-built function int() cannot do the work due to the fact that the integral should be solved using numerical methods. Could someone tell me how to calculate that integral? I am thinking of doing it the Riemann way, but I was wondering if there is an easier way.

Thanks!

[Star Strider]

I cannot determine from your Question what you want to do.

See the integral (link) function and related functions. (Also consider the quad (link) function and its friends if you do not have integral.)

[Sarvjeet Singh]

Hi Miguel,

i am facing the same issue, can u help me ?

Answer 1

[Arvind Narayanan]

Hi Miguel,

You may use the integral function from MATLAB. Please note that quad function is not recommended as it will be discontinued soon.