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Cong Wen

Numerade Educator
Teaching Assistant

Biography

I am a Ph.D. student in math specializing in algebraic geometry.

Education

Cong has not yet added their education credentials.

Educator Statistics

Numerade tutor for 4 years
10 Students Helped

Topics Covered

Breaking Limits: Unlock Your Potential with Our Expert Solutions
Exploring the World of Derivatives: A Comprehensive Guide

Cong's Textbook Answer Videos

1

Cong's Quick Ask Videos

03:42
Calculus 1 / AB

Let u(x, y, t) = (1/t)exp[-(x^2 + y^2)/4t], where exp denotes e to the power of a function. Show that u(x, y, t) satisfies the 2-dimensional heat equation ut = uxx + uyy. Hint: product rule...

01:40
Calculus 3

Let f : [0, 1] → [0, 1] be continuous. Show that there exists x ∈ [0, 1] such that f(x) = x.

04:47
Calculus 3

04:08
Calculus 3

Provide an example of a function f(x) which has all of the following properties:
it is periodic with period 5,
it is neither even nor odd,
f(0) = 2, and
it is everywhere differentiable with f'(0) = 1.
Write down the precise definition of the function and draw its graph over the domain [-10, 10]. Moreover, compute its derivative f'(x).

01:35
Geometry

Find 1. cosh(5x) + sinh(5x)
2. (sinhx+ coshx)^4

01:44
Calculus 1 / AB

Evaluate the following integral using change of variables for the region R, which is bounded by the hyperbolas xy = 4 and xy = 5, and the lines y = 0 and y = 3.

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