Question

Solving this system of equations without a CAS: $4=a+c$, $5=d+ac+b$, $4=ad+bc$, $4=bd$

score 74 · Answer 1 · 2018-02-24 13:05:12

74

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Solving this system of equations without a CAS: $4=a+c$, $5=d+ac+b$, $4=ad+bc$, $4=bd$

Published on 24 Feb 2018 - 13:05

score 57 · Answer 2 · 2026-03-25 16:13:50

57

Views

For what values for parameter b will x have real results? $\frac{2x}{x+3}+\frac{bx-2x}{x^2-9}=\frac{x-1}{x-3}$

Published on 25 Mar 2026 - 16:13

score 75 · Answer 3 · 2018-02-24 19:57:48

75

Views

Find the limit of the function using l'Hopital's Rule?

Published on 24 Feb 2018 - 19:57

score 51 · Answer 4 · 2026-03-25 16:13:54

51

Views

Values for p so inequality is right for every x. $-9< \frac{3x^2+px-6}{x^2-x+1} < 6 $

Published on 25 Mar 2026 - 16:13

score 107 · Answer 5 · 2026-03-24 23:44:57

107

Views

Calculating the limit of $(x-1)e^{1/x}-x$

Published on 24 Mar 2026 - 23:44

score 70 · Answer 6 · 2026-03-25 07:53:26

70

Views

Prove that $\forall n \in \Bbb{N}, 1 <n, \left( 1 + \frac{1}{n} \right)^n < \sum_{i=0}^n \frac{1}{i!}$

Published on 25 Mar 2026 - 7:53

score 77 · Answer 7 · 2018-02-26 19:53:54

77

Views

Fractions everywhere

Published on 26 Feb 2018 - 19:53

score 180 · Answer 8 · 2026-03-25 01:18:37

180

Views

Show that $\frac{1}{a^n+b^n+c^n} = \frac{1}{a^n} + \frac{1}{b^n} + \frac{1}{c^n}$

Published on 25 Mar 2026 - 1:18

score 4.6k · Answer 9 · 2018-02-27 13:28:53

4.6k

Views

Difference between fractions and rational numbers?

Published on 27 Feb 2018 - 13:28

score 60 · Answer 10 · 2026-03-25 03:21:27

60

Views

$ \sum_{t=0}^{N}\left ( \frac{B(t) -C(t)}{(1+Z)^t} \right )=0 $, Solve for $Z$

Published on 25 Mar 2026 - 3:21

score 369 · Answer 11 · 2018-02-27 15:29:19

369

Views

Formal definition of fraction

Published on 27 Feb 2018 - 15:29

score 161 · Answer 12 · 2026-03-25 03:21:16

161

Views

Why does the Numerator of the Denominator go to the Denominator?

Published on 25 Mar 2026 - 3:21

score 63 · Answer 13 · 2026-03-24 22:06:43

63

Views

Find $S_n$ summation.

Published on 24 Mar 2026 - 22:06

score 65 · Answer 14 · 2026-03-25 10:15:33

65

Views

Find the angles of this triangle.

Published on 25 Mar 2026 - 10:15

score 33 · Answer 15 · 2018-03-02 02:14:22

33

Views

Rational expression in lowest term - question from Euler’s element of algebra

Published on 02 Mar 2018 - 2:14

List Question

Solving this system of equations without a CAS: $4=a+c$, $5=d+ac+b$, $4=ad+bc$, $4=bd$

For what values for parameter b will x have real results? $\frac{2x}{x+3}+\frac{bx-2x}{x^2-9}=\frac{x-1}{x-3}$

Find the limit of the function using l'Hopital's Rule?

Values for p so inequality is right for every x. $-9< \frac{3x^2+px-6}{x^2-x+1} < 6 $

Calculating the limit of $(x-1)e^{1/x}-x$

Prove that $\forall n \in \Bbb{N}, 1 <n, \left( 1 + \frac{1}{n} \right)^n < \sum_{i=0}^n \frac{1}{i!}$

Fractions everywhere

Show that $\frac{1}{a^n+b^n+c^n} = \frac{1}{a^n} + \frac{1}{b^n} + \frac{1}{c^n}$

Difference between fractions and rational numbers?

$ \sum_{t=0}^{N}\left ( \frac{B(t) -C(t)}{(1+Z)^t} \right )=0 $, Solve for $Z$

Formal definition of fraction

Why does the Numerator of the Denominator go to the Denominator?

Find $S_n$ summation.

Find the angles of this triangle.

Rational expression in lowest term - question from Euler’s element of algebra

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