Mathematics
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A. Goodier's user avatar
A. Goodier's user avatar
A. Goodier
  • Member for 6 years, 4 months
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  • United Kingdom
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All Questions Answers
Score Newest
answer
42
Justify, without evaluating, that the determinant of the following matrix is zero
Feb 25, 2018
answer
30
Prove that the equation has only one real root.
Nov 17, 2019
answer
26
Show that the polynomial $P(x):=x^4-6x+6$ has no real roots .
Apr 25
answer
22
Equation $a^a=b^b$
Apr 22
question
21
Proving that $3^{(3^4)}>4^{(4^3)}$ without a calculator
Nov 19, 2021
answer
17
Verifying 'standup maths' homeomorphism claim
Jul 31, 2021
answer
15
why is the intersection of two sets with no common element equal to the subset containing the empty set and not simply the empty set?
Dec 28, 2019
answer
11
Why is the euler characteristic of a sphere 2?
May 10, 2020
answer
10
Let $a, b, c, d \in \mathbb R$. Given that $a^2 + c^2 = 1$, $b^2 + d^2 = 1$, and $ab + cd = 0$, show that $|ad - bc| = 1$.
May 22, 2020
answer
9
English names for vector beginning and end
Nov 6, 2017
Top network posts
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35
Helping students who make no effort to figure things out for themselves
22
Fun set theory for kids
22
Student asked me if it is necessary to simplify fractions at the end of answering a question. I'm not sure how to respond
20
How rigorous should high school calculus be?
8
What are the "lovely tales" in Keats' "Endymion"?

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