Answer:
kei = kelvin\_kei(x) evaluates an approximation to the Kelvin function kei x. The function is based on several Chebyshev expansions. For large x, kei x is so small that it cannot be computed without underflow and the function fails.
kei (output, double)
Approximation of the Kelvin function kei x.
I'm not exactly sure, so if I'm wrong please correct me.
The equation is 2kg + x = s
↓
(can be any variable letter)
8x^{4}-2/3x^{2}-2/3x
Step-by-step explanation:
I couldn't put this full page.
Thankfully I found the answer