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MathematicsStudent1122

Vancouver, British Columbia, Canada

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65
How can I address a student systematically boosting their grades by filing frivolous complaints?
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48
Why do we call complex numbers “numbers” but we don’t consider 2-vectors numbers?
math.stackexchange.com

38
Why do we ask for *absolute* convergence of a series to define the mean of a discrete random variable?
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34
Which one is the variable? (Derivatives)
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21
A question from 1989 leningrad mathematical olympiad
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20
Is $\int_0^2 f(x) dx$ defined for $f(x)=x,x \ne 1$?
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18
Can we express any positive real number with arbitrary precision using a ratio of two prime numbers?
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13
$\frac{0}{0}$ Indeterminate
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12
Why do extraneous solutions exist?
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11
Does a PhD from US carry *more academic value* as compared to one in India even if the research skill set developed is same?
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11
Why does the widespread erroneous definition of "irrational number" persist without being taught?
matheducators.stackexchange.com

10
Continuity of Derivative at a point.
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10
A very short proof of $e$ is irrational
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10
$\lim_{x \rightarrow 0} f'(x) = L$ exists, does it follow that $f'(0)$ exists?
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9
Prove that $4$ divides $3^{2m+1} - 3$
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9
In the range $0\leq x \lt 2\pi$ the equation has how many solutions $\sin^8 {x}+\cos^6 {x}=1$
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8
Finding roots of $\sin(x)=\sin(ax)$ without resorting to complex analysis
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8
If $f(1)=f(0)$, then show that $|f'(x)|\leq 1$ for all $x\in [0,1]$
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8
Is Area of a circle always irrational
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8
A bounded sequence cannot be divergent. True or false
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7
About the limit $\mathop {\lim }\limits_{n \to \infty } \frac{1}{n \cdot \cos (n)} $
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7
Does, $\lim\limits_{x \to +\infty } f'(x) = + \infty \Leftrightarrow \lim\limits_{x \to +\infty } \frac{{f(x)}}{x} = + \infty $?
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7
Why is $1^{\infty}$ undefined when the limit of it is $\operatorname e$?
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7
Taking the derivative inside the integral (Liebniz Rule for differentiation under the integral sign)
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7
Let $f$ be a real uniformly continuous function on the bounded set $E$ in $\mathbb{R^1}$. Prove that $f$ is bounded on $E$
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6
f satisfies functional equation f(x+y)=f(x)+f(y) and is Riemann integrable, show f(x)=cx
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6
Intuition behind the formula for $\sum i^{2}$
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6
Has this function a primitive?
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6
Why is this proof of the chain rule incorrect?
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6
Secret-Santa: Probability of two people drawing each other.
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