Question

verify whether (-1, 0) is a stationary value of z = x³ + 3xy² - 3x​

Answer 1

Answer:

A stationary point of a function f(x) is a point where the derivative of f(x) is equal to 0. These points are called “stationary” because at these points the function is neither increasing nor decreasing. Graphically, this corresponds to points on the graph of f(x) where the tangent to the curve is a horizontal line.