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 Nov11 accepted Find m satisfied $\dim(U^\perp) = 2$ Nov11 accepted Find a shortest distance from point to $\operatorname{span} U$ Nov9 accepted Find basis for $\ker T$ with $T:P_2 \to P_2: T(p(x)) = p(x) + p(-x)$ Nov9 accepted find $rank(T)$ when $T: P_2\to P_2:T(p(x)) = p(x+1)$ Nov6 accepted Find a basis of $\ker T$ and $\dim (\mathrm{im}(T))$ of a linear map from polynomials to $\mathbb{R}^2$ Nov4 accepted Prove : $\rm{col}(B) \subseteq \rm{null}(A)$ Nov4 accepted Is $U = \{f(x)| f(x) \in P_{3}, \operatorname{deg} f(x) = 3\}$ a subspace of $P_{3}$? Nov2 accepted Find conditions for a polynomial $p$ to be in a vector space $U$ Nov2 accepted Modulo equation : $\frac{n^{k+1}-1}{n-1} \equiv a{\pmod p}$ Aug20 accepted Matrix Manipulation : trick to sum elements of vector Jun26 accepted Multi variable integral : $\int_0^1 \int_\sqrt{y}^1 \sqrt{x^3+1} \, dx \, dy$ Jun26 accepted Find volume of region bound by $y=x, y=x^2$ around x-axis Jun15 accepted $s(x)$ is a arc length function, find $s'(x)$ Jun15 accepted $f(1)=-3$ and $f'(x)\geq7$ how small is $f(5)$? Jun12 accepted Lagrange's method to find min/max question Jun12 accepted Formula to estimate sum to nearly correct : $\sum_{n=1}^\infty\frac{(-1)^n}{n^3}$ Jun7 accepted Partial Derivation: $\lim_{(x,y)\to(0,0)}\frac{x^2+\sin^2y}{2x^2+y}$ Jun4 accepted Sum of two divergence series is always divergence series? May30 accepted Maple: how to solving composite function May22 accepted Evaluating $\int_{0}^{1} \sqrt{1+x^2} \text{ dx}$