Test Mode
Reading Mode
Right = 0
Wrong = 0
f(a) = b, f(b) = c, f(c) = d, f(d) = a
f(a) = b, f(b) = c, f(c) = b, f(d) = a
f(a) = b, f(b) = c, f(c) = d
f(a) = b, f(b) = c, f(c) = d, f(c) = a
R-{(2n+1)π/2, n ϵ Z }
R-{2nπ, n ϵ Z }
R-{nπ, n ϵ Z }
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