User Math Lover - Mathematics Meta Stack Exchange

Math Lover

Member for 7 years, 5 months
Last seen more than 3 years ago

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20

Solve without a calculator: If $x+\sqrt{x}=13$ then $x+\frac{13}{\sqrt{x}}=?$

19

Finding the maximum value without using derivatives

14

Prove $\ln(1+x)\geq x-\frac{x^2}{2}$

13

Find the value $\binom {n}{0} + \binom{n}{4} + \binom{n}{8} + \cdots $, where $n$ is a positive integer.

13

How do I prove $x - \frac{x^3}3 < \arctan x < x$?