gt6989b
Reputation
15,248
Top tag
Next privilege 20,000 Rep.
Access 'trusted user' tools
 Jan 24 answered Given the time complexity, determine how many problem instances can be solved in one minute Jan 22 comment Limit $\lim_{x \to 1} \frac{\log{x}}{x-1}$ without L'Hôpital why is the last step obvious -- you have a 0/0 form? Jan 22 comment Limit $\lim_{x \to 1} \frac{\log{x}}{x-1}$ without L'Hôpital @hardmath you only need up to the quadratic term. The OP was not interested in minimizing the number of derivatives, just in avoiding to use L'Hospital's rule... Jan 22 answered Limit $\lim_{x \to 1} \frac{\log{x}}{x-1}$ without L'Hôpital Jan 22 comment infinite sum of the sequences @ClementC. makes sense, did not think about it Jan 21 comment infinite sum of the sequences @AndréNicolas how does it help? power of $t$ in $\cosh$ expansion coincides with the factorial term, here is it a half of that Jan 21 comment Given the real number $t = - \frac 5 4 \pi$, give the values of the sine, cosine and tangent. Since sine, cosine and tangent have the same values on each interval of length $2\pi$, finding these at $-5\pi/4$ is the same as at $-5\pi/4+2\pi = 3\pi/4$. Can you do this now? Jan 19 revised Prime and Repunits deleted 8 characters in body Jan 19 comment Calculate the Integral $\int _0^{\frac{\pi }{2}}\:\frac{\sin^{7/2}x}{\sin^{7/2}x+\cos^{7/2}x}dx$ @Noam $$\frac{s}{s+c} + \frac{c}{s+c} = 1$$ Jan 19 revised Calculate the Integral $\int _0^{\frac{\pi }{2}}\:\frac{\sin^{7/2}x}{\sin^{7/2}x+\cos^{7/2}x}dx$ deleted 21 characters in body; edited tags Jan 19 comment Upper estimate of integral edited to the best of ability, please double check Jan 19 revised Upper estimate of integral added 42 characters in body Jan 19 comment How to approximate linear relationship between two timeseries? Could the one who downvoted please explain the downvote? The OP explicitly asked for a Excel/Matlab solution... Jan 19 revised How to approximate linear relationship between two timeseries? deleted 2 characters in body Jan 19 revised How to approximate linear relationship between two timeseries? added 180 characters in body Jan 19 answered How to approximate linear relationship between two timeseries? Jan 19 revised What are the prerequisites for learning linear algebra edited tags Jan 19 answered For how many pairs of distinct positive integers $a$ and $b$, both less than $100$, is $\dfrac{a}{b}$ the square of an integer? Jan 19 answered Calculate an integral Jan 19 revised How to evaluate a limit with an inverse of a sum added 4 characters in body