List questions from algebra-precalculus

519

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What's the explanation behind the identity $\frac{x+y}{2} +\frac{\vert x-y\vert}{2}=\mathrm{max}(x,y)$?

Published on 12 Apr 2026 - 21:38

135

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How to solve this trigonometric equation using Casio CFX 9860 series?

Published on 09 Apr 2026 - 4:31

105

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Finding the domain of logarithmic function

Published on 09 Apr 2026 - 4:47

441

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Why is $\frac{\log 8}{\log 3} = \frac{\ln8}{\ln3}$

Published on 17 Apr 2026 - 0:59

89

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Find the roots of $acx^2-b(c+a)x+(c+a)^2=0$

Published on 13 Apr 2026 - 17:26

138

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Euler's formula $e^{i\pi} = -1$

Published on 12 Apr 2026 - 23:30

98

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How to solve equations like these?

Published on 09 Apr 2026 - 3:36

141

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What is the value of $\sqrt[n]{(x-1)^n}$?

Published on 16 Apr 2026 - 4:54

121

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How do I find $f(x)$ based on this?

Published on 09 Apr 2026 - 1:55

101

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Prove $\frac{(x^2-5x+2)}{(x+1)} = x-6$ has no solutions using contradiction

Published on 15 Apr 2026 - 20:14

459

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Relation pairwise coprime and setwise coprime

Published on 14 Apr 2026 - 4:58

81

Views

Algebra for Home Schooling

Published on 12 Apr 2026 - 0:43

122

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Why is $5 + 5z + 5z^2 + ... + 5z^{11} = \frac{(5z^{12} - 5)}{(z - 1)}$?

Published on 16 Apr 2026 - 7:56

49

Views

Where will a robot be after infinite steps, if its first step is 5 to the right, then turn with an angle of 20° and its next step is 70% of the last?

Published on 13 Apr 2026 - 0:02

112

Views

Evaluating the complex summation

Published on 12 Apr 2026 - 19:13

List Question

What's the explanation behind the identity $\frac{x+y}{2} +\frac{\vert x-y\vert}{2}=\mathrm{max}(x,y)$?

How to solve this trigonometric equation using Casio CFX 9860 series?

Finding the domain of logarithmic function

Why is $\frac{\log 8}{\log 3} = \frac{\ln8}{\ln3}$

Find the roots of $acx^2-b(c+a)x+(c+a)^2=0$

Euler's formula $e^{i\pi} = -1$

How to solve equations like these?

What is the value of $\sqrt[n]{(x-1)^n}$?

How do I find $f(x)$ based on this?

Prove $\frac{(x^2-5x+2)}{(x+1)} = x-6$ has no solutions using contradiction

Relation pairwise coprime and setwise coprime

Algebra for Home Schooling

Why is $5 + 5z + 5z^2 + ... + 5z^{11} = \frac{(5z^{12} - 5)}{(z - 1)}$?

Where will a robot be after infinite steps, if its first step is 5 to the right, then turn with an angle of 20° and its next step is 70% of the last?

Evaluating the complex summation

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