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Mathematics
Rishav Dhariwal's user avatar
Rishav Dhariwal's user avatar
Rishav Dhariwal's user avatar
Rishav Dhariwal
  • Member for 2 years, 11 months
  • Last seen this week
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9
Why is the geometric solution of minimizing error via orthogonality called a "least squares" solution?
Sep 22, 2025
9
Number of Derangements where the product $\prod (p_i - i)$ is positive
Jan 11
5
Does the Chain Rule summation account for dependencies between intermediate arguments without needing cross-terms?
Dec 30, 2025
3
Why does infinite time not guarantee reaching state $K$ in a biased random walk?
yesterday
2
How to represent double antiderivative of a function as a definite integral
Jun 2, 2024
2
how to express a polynomial $q(D)$ of degree $k$ as powers of $(D - a)$
Jun 24, 2024
2
Does injectivity of $f \circ g$ imply injectivity of g if the composite domain is restricted?
Dec 17, 2025
2
Does the theorem "If $f \circ g$ is injective, then $g$ is injective" fail when $D_{f \circ g} = \{ x \in D_g \mid g(x) \in D_f \}$ definition is used
Dec 18, 2025
1
Proving that for every solution to the ODE $\frac{dy}{dx} = y^2 - x$ there exists some $c$ so that the solution does not exist for $x < c$ [closed]
Jun 7, 2024
1
Using Euler's Identity to simplify $\cos(2t + \pi/4) \cdot \cos(2t)$
Jun 28, 2024