User RobertTheTutor

2 votes

Is a Linear Map uniquely determined on $V$ or on a basis of $V$?

answered Apr 23, 2021 at 20:51

2 votes

How can one prove that the resulting projection onto a "canvas" of a conic is still a conic?

answered Apr 20, 2021 at 22:26

2 votes

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What is the measure of $\measuredangle B$ on the trapeze below?

answered Aug 20, 2021 at 2:36

2 votes

Accepted

Find the number of 4-digit integers whose product of all digits is equal to 16

answered Aug 21, 2021 at 20:13

2 votes

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Probability random pick bad/good parts for robot

answered May 14, 2021 at 23:00

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What's the meaning of ratio of second moment over third moment

answered May 21, 2021 at 3:04

2 votes

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Why is the dot product of the vector and itself equals to the length of the vector squared?

answered May 17, 2021 at 20:01

2 votes

What does this shorthand mean |x| = -x > 0

answered May 29, 2021 at 21:01

2 votes

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Exact differential equation identity

answered Jul 8, 2021 at 22:49

2 votes

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Why is gravity divided by $2$ when you parameterize projectile motion.

answered Apr 5, 2021 at 20:00

2 votes

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Laplace transform of $t^n$ using integration by parts

answered Apr 6, 2021 at 3:14

2 votes

How do I evaluate $\sum_{n=1}^{\infty}\frac{n}{2n-1} - \frac{n+2}{2n+3}$?

answered Mar 29, 2021 at 23:16

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Intuition about the definition of Probability Density Function

answered Apr 1, 2021 at 14:51

2 votes

4d rotation into 3d shape

answered Mar 29, 2021 at 0:17

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Is there a sense in which the Chi-squared distribution is an inner product?

answered Mar 26, 2021 at 1:06

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Calculate fictional moon position in the sky

answered Apr 13, 2021 at 19:40

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How to compute change of basis?

answered Mar 20, 2021 at 20:02

2 votes

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Maximize $f(x,y) = x+y$ subject to $x^2+xy+y^2+y=1$

answered Mar 19, 2021 at 0:44

2 votes

Coin Distribution Problem- Combinations

answered Mar 21, 2021 at 2:07

2 votes

Probability of Type 1 Error when using $X_{min}$ as a test static

answered Mar 23, 2021 at 12:35

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How to break the components of a vector perpendicular to another?

answered Mar 23, 2021 at 12:19

2 votes

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How to solve $\int\frac{dx}{(x^2 - 8x + 1)}$?

answered Mar 23, 2021 at 16:09

2 votes

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Tiny doubt with square root

answered Mar 13, 2021 at 18:41

2 votes

Create N points that are spaced as far as possible within a D dimensional sphere

answered Mar 14, 2021 at 3:03

2 votes

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How does the tangent line according to calculus correlates to the classic intuition of a line that only passes through one point of the curve?

answered Mar 14, 2021 at 3:14

2 votes

Mice and poisonous wine brainteaser

answered Mar 16, 2021 at 0:57

2 votes

prove $\left\{\begin{array}{l}X^{\prime \prime}+\lambda X=0,0<x<1 \\ X(0)=0, X(1)+X^{\prime}(1)=0\end{array}\right.$ has $\lambda >0$ without solving

answered Mar 16, 2021 at 4:06

2 votes

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Derivative using Product Rule

answered Mar 18, 2021 at 16:37

2 votes

Better way to solve $\cos\left(\frac{\gamma'}{2}\right) = g_0$ and $e^{i\beta'} \sin\left(\frac{\gamma'}{2}\right) = g_1$ for $\gamma',\beta'$?

answered Mar 18, 2021 at 22:00

2 votes

Find a matrix $A$ with no zero entries such that $A^3=A$

answered Feb 13, 2021 at 1:56

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345 Answers

Is a Linear Map uniquely determined on $V$ or on a basis of $V$?

How can one prove that the resulting projection onto a "canvas" of a conic is still a conic?

What is the measure of $\measuredangle B$ on the trapeze below?

Find the number of 4-digit integers whose product of all digits is equal to 16

Probability random pick bad/good parts for robot

What's the meaning of ratio of second moment over third moment

Why is the dot product of the vector and itself equals to the length of the vector squared?

What does this shorthand mean |x| = -x > 0

Exact differential equation identity

Why is gravity divided by $2$ when you parameterize projectile motion.

Laplace transform of $t^n$ using integration by parts

How do I evaluate $\sum_{n=1}^{\infty}\frac{n}{2n-1} - \frac{n+2}{2n+3}$?

Intuition about the definition of Probability Density Function

4d rotation into 3d shape

Is there a sense in which the Chi-squared distribution is an inner product?

Calculate fictional moon position in the sky

How to compute change of basis?

Maximize $f(x,y) = x+y$ subject to $x^2+xy+y^2+y=1$

Coin Distribution Problem- Combinations

Probability of Type 1 Error when using $X_{min}$ as a test static

How to break the components of a vector perpendicular to another?

How to solve $\int\frac{dx}{(x^2 - 8x + 1)}$?

Tiny doubt with square root

Create N points that are spaced as far as possible within a D dimensional sphere

How does the tangent line according to calculus correlates to the classic intuition of a line that only passes through one point of the curve?

Mice and poisonous wine brainteaser

prove $\left\{\begin{array}{l}X^{\prime \prime}+\lambda X=0,0<x<1 \\ X(0)=0, X(1)+X^{\prime}(1)=0\end{array}\right.$ has $\lambda >0$ without solving

Derivative using Product Rule

Better way to solve $\cos\left(\frac{\gamma'}{2}\right) = g_0$ and $e^{i\beta'} \sin\left(\frac{\gamma'}{2}\right) = g_1$ for $\gamma',\beta'$?

Find a matrix $A$ with no zero entries such that $A^3=A$