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 13 Derivative of $x^x$ at $x=1$ from first principles 11 Consecutive Prime Gap Sum (Amateur) 10 Dimensions of symmetric and skew-symmetric matrices 10 Looking for simple function: Passes through 0, sqrt like but never reaches 100 8 How to calculate ratio of areas of the shaded triangle and the hexagon?

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 +10 Chebyshev polynomial properties +18 Find vectors u and v such that W = Span{u,v} -2 Directional Derivative help, solving for derivative = 0 when given constants +10 Why $\lim_{x \to \infty } \sqrt{(x^2 + 7x)} - x$ is $7\over2$

### Questions (5)

 6 How to find $\lim\limits_{x\to0}\frac{e^x-1-x}{x^2}$ without using l'Hopital's rule nor any series expansion? 6 How to solve a particular initial-boundary value problem 4 Cesàro mean for a divergent sequence 2 What is the English name of these definitions? 1 Find unknown such that four dependent quantities have the same value.

### Tags (111)

 52 calculus × 34 24 derivatives × 12 40 linear-algebra × 25 17 matrices × 14 38 limits × 16 17 differential-equations × 13 31 integration × 17 17 sequences-and-series × 5 24 geometry × 16 16 multivariable-calculus × 15

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