matlab inline function with argument conditions

Question

folks,

I am wondering if it is possible to write the following function of r as an inline function in matlab. I tried to include the condition as a separate factor such as *(r>a) and I got NaN due to the division of 1/r^3 when r is 0.

Answer 1

I fould a simple way out. It's basically what Shai and Jigg suggested, i.e. using an extra multiplicative factor of (r>a).

To get rid of NaN, we just need to add eps to the denominator of 1/r3, i.e.

 1/(r+eps)^3 *(r>a)