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comment If $y'+y=|x|$ and $y(-1)=0$, what is $y(1)$?
According to the first part $y(0)=1-{2\over e}$. Your $y(\cdot)$ for the second part does not satisfy this.
1h
answered How do I compute the angles of a pyramid from the angle between its sides?
1h
revised Definition of partial derivatives from Rudin's PMA
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16h
revised 3 body problem using only math
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22h
answered number of ways of arranging balls so that there are exactly two pairs of green balls
1d
answered 3 body problem using only math
1d
revised Prove that a function is Riemann integrable directly, using $\epsilon-P$
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1d
answered Prove that a function is Riemann integrable directly, using $\epsilon-P$
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answered Trouble understanding solving integrals like linear equations
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revised How does the fact that Fermat primes are relatively prime imply there are infinite primes?
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1d
comment Defining the states when we roll one single die repeatedly
The exact values are $$p_1=p_2={22\over51}, \quad p_3=p_4={7\over17},\quad p_5=p_6={16\over51}\ ,$$ which then leads to $$p={59\over153}\ .$$
1d
answered given $-\pi < \theta \leq \pi$ prove $f(z) = z^{1/3}$ is not entire.
1d
comment How does computing the determinant of a matrix with unit vectors give you the Cross Product?
This definition of the cross product is definitely degrading the notion of determinant, and should be abolished. Outside of "Schaum's Outline" (which was outdated even when I was a student in the fifties of the last century), and similar texts, all elements of a matrix should be of the same type.
1d
revised Defining the states when we roll one single die repeatedly
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1d
revised Defining the states when we roll one single die repeatedly
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1d
comment Defining the states when we roll one single die repeatedly
I have transposed everything in oder to adopt the usual conventions. The result remains the same.
1d
revised Defining the states when we roll one single die repeatedly
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1d
comment Defining the states when we roll one single die repeatedly
My matrix acts on the left on the column vectors $x(n)$. Therefore its columns have sum $1$.
1d
answered Proving that the exponential inequality $e^x \ge x^e$ holds for all $x \ge 0$
1d
answered Defining the states when we roll one single die repeatedly