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Mathematics
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user1299519
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Prove that $a=0$ if and only if $b=0$ for the cubic $x^3 + ax^2 + bx + c=0$ whose roots all have the same absolute value.
Apr 2
1
Two distinct numbers have the same number of digits and sum of digits. Can one be a multiple of the other?
Mar 10
0
How must I find the third vertex of an equilateral / right isosceles triangle given the coordinates of 2 vertices?
Apr 2
0
Parametric equations of the normal to a curve $\gamma(t)$ at a point $\gamma(t_0)$
May 23