Yuxiang Wang wrote:
> Dear all,
>
> I was wondering is there a convenient inverse function of
> np.polyval(), where I give the y value and it solves for x?
>
> I know one way I could do this is:
>
> import numpy as np
>
> # Set up the question
> p = np.array([1, 1, -10])
> y = 100
>
> # Solve
Dear all,
I was wondering is there a convenient inverse function of
np.polyval(), where I give the y value and it solves for x?
I know one way I could do this is:
import numpy as np
# Set up the question
p = np.array([1, 1, -10])
y = 100
# Solve
p_temp = p
p_temp[-1] -= y
x = np.roots(p_temp)
