Exact values for trigonometric functions
sin(60°) = 1/2*sqrt(3)
Polar form for complex numbers 1∠30°,
hold i to enter ∠
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Fractional part - frac(1.5) = 0.5
Gamma function and related -
gamma(x)/Γ(x), lngamma(x)/lnΓ(x),
digamma(x)/ψ(x)