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Jan
17
revised How to compute $\cos(\arctan(2)) = 1/\sqrt{5}$
fixed math formatting and spelling
Jan
17
revised Taylor expansion of $\cosh^2(x)$
fixed MathJax formatting
Jan
16
revised Any subspace of connected set is connected?
added 5 characters in body
Jan
8
revised Definition of Dirac Delta function on the surface of a unit sphere
deleted 7 characters in body; edited title
Dec
20
revised Find the value of following complex number
edited title
Dec
19
revised Zeroes of sin(x)
fixed formatting
Dec
16
revised Rewriting $\sin(\arccos(y))$ and $\arcsin(\cos(x))$
replaced image of formulas by MathJax formulas, other formatting and spelling corrections
Dec
16
revised Complex numbers getting too complex!
added 6 characters in body
Dec
16
revised Finding an invariant subspace of a linear operator.
edited title
Dec
13
revised Can sets have derivatives?
edited body
Dec
13
revised Can sets have derivatives?
Added something about extending the definition beyond just functions.
Nov
1
revised measurable functions. Why defined like this?
edited body
Oct
31
revised What mathematical object accepts a sequence as input?
added 113 characters in body
Oct
31
revised boolean equation to truth table
MathJax, typos
Oct
28
revised convergent sequence / prove of reordering rule
added 3 characters in body
Oct
25
revised Another way of counting probability
Corrected for the condition that at least one number has to be chosen
Oct
25
revised Relatively tight upper and lower bounds for surreal numbers
edited body; edited tags
Oct
25
revised How many times will the statement 5 be executed?
added 32 characters in body; edited title
Oct
25
revised A limit problem with sine
fixed sin
Oct
24
revised What does $\frac{dx}{dx}=1$ mean?
added 606 characters in body