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visits member for 2 years, 2 months
seen Aug 9 at 13:27

Jan
6
comment 2nd order partial differential equations
What book is it from? Need a bit more context
Jun
26
comment The volume and surface area of pipe?
I'm not 100% sure. But I think it is correct.
Jun
24
comment Linear algebra: projection
I geuss $W$ is a subspace of $P_2$ with orthogonal basis ${−x+1,x^{2}−2x+4}$
Jun
24
awarded  Supporter
Jun
24
awarded  Teacher
Jun
24
answered Solving $\sin 7\phi+\cos 3\phi=0$
Jun
21
answered Axiomatization of $\mathbb{Z}$