let (d^2 y/dx^2 )+p(x)(dy/dx)+q(x)y=0 , x∈R where
p(x) and q(x) are continuous function if
y_1 = sinx−2cosx and y_2 = 2sinx +cosx
are L.I (linearly independent) solution
then ∣4p(0)+2q(1)∣ = ?
Let f(W) be a function of vector W ∈ R^N ,
i.e. f(W) = (1/(1 + e^(−W^T x) ))
Determine the first derivative and
matrix of second derivatives of f with
respect to W