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Sep
23
revised Prove that $\sum_{k=0}^r {m \choose k} {n \choose r-k} = {m+n \choose r}$
edited tags
Sep
23
revised How to calculate no. of binary strings containg substring “00”?
edited tags
Sep
23
revised How to solve this using using stirling approx?
edited tags
Sep
21
answered Re-write $1 \cdot x$ to $x$.
Sep
15
comment Show Continuity Using Epsilon Delta Definiton
What happens if you attempt to do what it asks?
Sep
12
answered Is the any application of vector that is only specific to biology or chemistry?
Sep
12
revised “Monotone Convergence Theorem” $\implies$ “least upper bound property”
edited tags
Sep
12
revised Binomial and series with 2 coefficients
Fixed error
Sep
12
reviewed Leave Open A bijection of Cartesian products
Sep
11
answered Solving 50! mod 103
Sep
10
reviewed Leave Open how do you call a function that breaks down on y?
Sep
10
reviewed Leave Closed Is the $\sum\sin(n)/n$ convergent or divergent?
Sep
10
reviewed Leave Closed Limit of the nested radical $\sqrt{7+\sqrt{7+\sqrt{7+\cdots}}}$
Sep
10
reviewed Leave Closed Why is $dy dx = r dr d \theta$
Sep
10
reviewed Leave Closed How to find the equation of a graph with given coordinates?
Sep
10
reviewed Leave Closed If g(f(x)) is one-to-one (injective) show f(x) is also one-to-one (given that…)
Sep
10
reviewed Leave Closed Is square root of an integer, either an integer or an irrational number, but never (non-integer) rational?
Sep
10
reviewed Leave Closed Weird E letter? (sigma)
Sep
10
reviewed Leave Closed Sum of n consecutive numbers
Sep
10
reviewed Leave Closed Puzzle - where did the extra dollar come from?