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visits member for 3 years, 2 months
seen 12 hours ago

Dec
15
awarded  Caucus
Nov
13
comment Why is the absolute sign needed in the definition of a bounded function
+1 for going to the intent of the notation
Nov
5
awarded  Custodian
Nov
5
reviewed Approve Finding Transformation matrix between two 2D coordinate frames [Pixel Plane to World Coordinate Plane]
Oct
11
awarded  Yearling
Aug
31
answered Calculate $n$ points having equal cartesian distance over a single sine wave
Aug
29
revised finding volume of the cone by using the dot product
added 48 characters in body
Aug
29
comment finding volume of the cone by using the dot product
@harry it's actually $u \angle v$
Aug
29
comment finding volume of the cone by using the dot product
the sine and cosine of the angle between $u$ and $v$ resp.
Aug
29
answered finding volume of the cone by using the dot product
Aug
27
comment Evaluating $\ln(\cos x))$ using Taylor expansion
you should be using different unknowns, now the $x$ in the $\ln$ expansion is different from the $x$ in $\cos x$
Aug
21
revised The process of solving the inequality $\frac{8}{19} x\ge -1$
corrected equations
Aug
21
suggested approved edit on The process of solving the inequality $\frac{8}{19} x\ge -1$
Jul
10
comment How to create circles and or sections of a circle when the centre is inaccessible
and your print screen button doesn't work?
May
19
comment Number of ways to order numbers such that greatest number proceeds smallest number
which is equal to $\frac{n!}{2}$
May
17
answered What did Johann Bernoulli wrong in his proof of $\ln z=\ln (-z)$?
May
16
comment Proving that all eigenvalues are $0$ bar one.
it's sufficient to prove that all $Ax=a\mathbf{e}$
Apr
17
comment Why does $n^0 = 1$?
there is $$ n^k = \Pi^k_{i=1}i$$ but that relies on $$ \Pi^0_{i=1}i=0$$
Apr
10
comment Visually deceptive “proofs” which are mathematically wrong
result of the assumption that $\sqrt b \cdot \sqrt a = \sqrt{a\cdot b}$ for all reals $a$ and $b$ instead of only for positive reals
Apr
7
comment Visually deceptive “proofs” which are mathematically wrong
all of the answers below rely on a slight bend in a diagonal line which accounts for the missing area