我愛你一生一世的矩陣算法

# Partial derivative of cost in terms of theta0
def partial_cost_theta0(theta0, theta1, x, y):
# Hypothesis
h = theta0 + theta1*x
# Difference between hypothesis and observation
diff = (h - y)
# Compute partial derivative
partial = diff.sum() / (x.shape[0])
return partial

行列式=|(5,2,-4)(1,2,4)(34,1,0)|=|(5,2,-4)(6,4,0)(34,1,0)|=-4*|(6,4)(34,1)|
=(-4)(6-4*34)=520
【附：高隱那個賣念脊不叫矩陣，叫行列中滲式?！?/div>