Let f(x)=|x−1|+|x|. Find the number of critical points of the function in its domain.. Find the number of critical points of the function in its domain.

What is the Mixed Derivative Theorem for mixed second-order partial derivatives? How can it help in calculating partial derivatives of second and higher orders?

How do I find the y-intercept of a parabola?

What are the vertices of ${\displaystyle 9x^2+16y^2=144}$?

How to determine the rate of change of a function?

Why are the tangents for 90 and 270 degrees undefined?

How to find the center and radius of the circle ${\displaystyle x^2+y^2-6x+8y=0}$?

What is multiplicative inverse of a number?

How to find the continuity of a function on a closed interval?

How do I find the tangent line of a function?

How to find vertical asymptotes using limits?

How to find the center and radius of the circle ${\displaystyle x^2-12x+y^2+4y+15=0}$?

Let f be a function so that (below). Which must be true?
I. f is continuous at x=2
II. f is differentiable at x=2
III. The derivative of f is continuous at x=2
(A) I (B) II (C) I and II (D) I and III (E) II and III

How to find the center and radius of the circle given ${\displaystyle x^2+y^2+8x-6y=0}$?

How to find the center and radius of the circle ${\displaystyle x^2+y^2+4x-8y+4=0}$?

How to identify the center and radius of the circle ${\displaystyle {(x+3)}^2+{(y-8)}^2=16}$?