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ys wong

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earned this badge 40 times.

Finding the Curl of a vector field. (Vector calculus)

Awarded Mar 28 at 8:47

Proving a set of accumulation points (Complex Analysis)

Awarded Feb 16 at 7:20

Use the Cauchy Riemann Equations to determine whether a function is analytic (Complex Analysis)

Awarded Nov 20, 2021 at 17:56

Prove/Disprove that the set of rational numbers is uncountable (Real Analysis)

Awarded Nov 18, 2021 at 14:42

Prove that for any set $A$, there is no one-one correspondence between $A$ and its power set $P(A)$

Awarded Sep 15, 2021 at 15:56

Plotting the graph of systems of ODE

Awarded May 18, 2021 at 9:10

Proving the existence of an inverse of a matrix. (Linear algebra)

Awarded Mar 31, 2021 at 22:50

Parametric equations of a cycloid

Awarded Mar 24, 2021 at 17:51

Proving that $a^{b}$ is rational (Elementary number theorey) [duplicate]

Awarded Oct 6, 2020 at 20:15

Finding minimum point of a function using linear algebra

Awarded Sep 9, 2020 at 16:06

Continuity of multivariate functions

Awarded Jul 13, 2020 at 21:31

Residues of $f(z)=\frac{z^2-2z}{(z+1)^2(z^2+4)}$

Awarded Apr 5, 2020 at 7:20

Do these two parametric equations represent the same curve?

Awarded Mar 27, 2020 at 4:25

Proving the number of leaves of a tree. (Graph Theory)

Awarded Mar 26, 2020 at 16:20

Continuity of $\frac{2xy}{x^2+y^2}$ at $(0,0)$

Awarded Mar 17, 2020 at 14:55

Proving whether the difference of two series is convergent of divergent

Awarded Feb 27, 2020 at 18:35

Finding the probability density for a Poisson process

Awarded Jan 29, 2020 at 5:45

Finding the volume of a cylindrical beer glass via triple integral

Awarded Dec 1, 2019 at 5:25

Finding the equilibrium solutions of a logistic equation

Awarded Mar 27, 2019 at 14:15

Multivariable limit of rational function

Awarded Feb 7, 2019 at 15:05

taking partial derivatives of a modulus

Awarded Feb 1, 2019 at 20:55

Proving that any two spanning trees for a graph has the same number of edges

Awarded Oct 16, 2018 at 15:25

Solving a second Order ODE of a catenary curve

Awarded Sep 27, 2018 at 0:00

Finding the probability of whether it would rain on weekends

Awarded Jul 31, 2018 at 3:35

Finding minimum value of a directional derivative(Multivariate Calculus)

Awarded May 29, 2018 at 12:11

Using the well ordering principle to prove a certain property of an integer

Awarded May 29, 2018 at 6:01

Finding the number of ways to tile a rectangular board

Awarded May 13, 2018 at 1:20

Proving dimension formula in linear algebra

Awarded Mar 17, 2018 at 22:46

Using the Existence and uniqueness theorem to find the interval of validity of a unique solution in a Linear ODE

Awarded Mar 11, 2018 at 2:35

Prove that trees have at least two vertices of degree one

Awarded Dec 23, 2017 at 13:26

Multivariate limit $\lim_{(x,y) \to (0,0)} \frac{{x{y^2}}}{{{x^2} + {y^4}}} = 0$

Awarded Oct 19, 2017 at 23:06

(post deleted or otherwise unavailable)

Awarded Sep 19, 2017 at 0:21

Probability that 4 friends will be in the same class

Awarded Sep 11, 2017 at 5:49

Solving a first order linear ODE and determining the behavior of its solutions

Awarded Aug 1, 2017 at 17:34

Finding continuity and differentiability of a multivariate function

Awarded Apr 25, 2017 at 13:11

Finding the no of ways to count the letters in an English alphabet

Awarded Dec 19, 2016 at 7:44

Proving a Conditional Probability Theorem (General Addition Rule)

Awarded Oct 25, 2016 at 2:29

Second Order Linear ODE Oscillations and Damping

Awarded Oct 16, 2016 at 1:43

Probability of getting 4 aces in a stack of 52 cards

Awarded Aug 24, 2016 at 4:21

Finding the limits of a multivariable function $\frac{x^2y^2}{x^4+y^2}$

Awarded Jul 13, 2015 at 11:03

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