1019 past contests
Topic 13 · First three terms of the sequence $u_n=3n^2-2n$
Topic 19 · Finding $b$ and $c$ when $x^2+bx+c\lt0$ has solution set $-1\lt x\lt5$
Topic 42 · Finding $\cos x$ given $\sin x=\dfrac{3}{4}$
Topic 42 · Finding $\sin x$ given $\cos x=-\dfrac{2}{5}$
Topic 42 · Finding $\sec x$ given $\tan x=2$
Topic 11 · Finding $p$ when $(x,y)\mapsto(2x+y,\ 5x+3y)$ maps $p$ onto $b(1,2)$
Topic 19 · Is $x^3+27=(x-3)(x^2+3x-9)$? (true/false)
Topic 19 · Is $x^3-125=(x-5)(x^2+5x+25)$? (true/false)
Topic 19 · Is $x^3+64=(x+4)(x^2-4x+16)$? (true/false)
Topic 8 · Solving $\log_3(2x+5)=\log_3(x-2)+1$ (second contest)
Topic 26 · Remainder of $3x^3+5x^2-3x+4$ divided by $x+2$ using the remainder theorem
Topic 11 · Finding $p$ when $t(x,y)=(4x+y,\ 3x+y)$ maps $p$ onto $(-3,2)$
Topic 28 · $x^2+\dfrac{1}{x^2}$ given $x+\dfrac{1}{x}=-11$
Topic 28 · $x^2+\dfrac{1}{x^2}$ given $x+\dfrac{1}{x}=5$
Topic 28 · $x^2+\dfrac{1}{x^2}$ given $x-\dfrac{1}{x}=-7$
Topic 45 · Image of $y=x^2$, $y=x+4$ and $y=x^3$ after reflection in the point $a(2,3)$
Topic 2 · Riddle: momentum, a vector product whose rate of change drives linear motion
Topic 42 · Is $\tan113^\circ=\tan67^\circ$? (true/false)
Topic 42 · Is $\sin137^\circ=\sin43^\circ$? (true/false)
Topic 42 · Is $\cos125^\circ=\cos55^\circ$? (true/false)