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12m
answered Proportional Distribution
2h
reviewed Approve Checking if “continuous” when $x$ is 1 and reaches 1
2h
comment Proving the set of subsequences of a sequence are uncountable
@DavidC.Ullrich OK. It's a long time since I did any formal real analysis so I didn't remember that's the standard definition.
4h
comment Proving the set of subsequences of a sequence are uncountable
@DavidC.Ullrich Perhaps. I would argue that it's most common and most useful to define a subsequence using the sequence of its positions, not the sequence of its values.
1d
revised Solving inequality with a recursive formula without its closed form?
fixed typo in title
1d
revised How can I adduce the mathematical model in my master thesis?
fixed typo in title
1d
comment How much proof is needed in such paper (Maths related)?
True. But this proof depends on a definition of the natural logarithm that gets you to its derivative without involving exponentiation. That's possible if you define the natural logarithm as the integral of $1/x$ (as in your proofwiki reference) but (to my mind) that's elegant but not natural.
1d
reviewed Approve Roots of a perturbed equation
1d
revised How much proof is needed in such paper (Maths related)?
fixed mathematics
1d
answered How much proof is needed in such paper (Maths related)?
1d
reviewed Approve Fourier series for discontinuous function
1d
comment How to solve $2^x < x^2$
There is no trick here. I suggest that you start by drawing the two graphs on the same set of axes. That might suggest an argument.
1d
comment proving some identities about $xy=0$
Please ask one question at a time, and show what you have tried.
2d
revised Positive Expectancy with Random Chance
fixed typo
Apr
26
comment Positive Expectancy with Random Chance
$(1/52)^{52}$ is not the "number of times you win", it's the probability that you pick the Ace of hearts every time. What you care about is picking the Ace at least once. The $0.64$ is $1-0.36$.
Apr
26
revised Positive Expectancy with Random Chance
added 135 characters in body
Apr
26
answered Positive Expectancy with Random Chance
Apr
26
comment Set of linear transformations being a vector space
I assume that somewhere in your course you have a definition of a vector space. Find that definition. It will have a list of conditions. Check that these definitions of addition and scalar multiplication satisfy those conditions, so make the set into a vector space. There is no formal or general way to do this - each case requires its own arguments to show that the conditions are satisfied.
Apr
26
revised Inner product of continuous functions
fixed typo in title
Apr
26
revised Probability with n dice
fixed typo in title