tryst with freedom

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multivariable-calculus

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39/20 answers

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20

Geometric proof of $\cos A + \cos B + \cos C + \cos (A+B+C) = 4 \cos \frac{A+B}{2} \cos \frac{B+C}{2} \cos \frac{A+C}{2}$

Aug 18, 2021

9

Quadratic formula in differential equations

Dec 3, 2020

8

Finding result of composing operations many times

Aug 25, 2020

8

Should I tick a multiple choice question at random or not in an exam with different weight for correct and wrong answer?

Jul 27, 2021

8

If two metric spaces are homeomorphic, what more conditions are required so that their balls are homeomorphic?

Aug 28, 2022

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11

What is a differential form?

Jun 25, 2021

10

Why and How do certain manipulations in indefinite integrals "just work"?

Aug 10, 2021

9

Approaching Type theory and Category Theory as a starting point in the study of mathematics?

Apr 1

8

Prove this formula $\frac{1-r\cos(x)}{1-2r\cos(x)+r^2}= 1+\sum_{n=1}^{+\infty}r^{n}\cos\left(nx\right)$

Jan 27, 2021

7

How to reconcile two approaches to the Gaussian curvature

May 23, 2022

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calculus

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multivariable-calculus

63

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55

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integration

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50

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geometry

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61

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linear-algebra

33

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52

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Reputation

+10

Adding fractions is not at all obvious

+10

Generalizing trig-sum to product using complex exponentials

+10

Solving a system of non linear equations in four variables with some equations looking like a determinant

+10

the Tangent Principle

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