List of functions:
Exponential, trigonometric, polynomial, rational and power functions up to ±3
Exponential
exp(x)2, exp(x), exp(-x), exp(-|x|), exp(-x2), exp(x) - 1
Hyperbolic
sinh(x), cosh(x), tanh(x), 1 / cosh(x)
Trigonometric
sin(x), cos(x), sin(x)2, cos(x)2,
cos(x)·exp(-x2), sin(x)·exp(-x2), cos(x)·exp(-|x|), sin(x)·exp(-|x|)
Logarithmic
ln(x), (ln(x))2, (ln(x))3, (ln(x))-1,
(ln(1+|x|))2, (ln(1+|x|))3, ln(1+exp(x))
Rational and smooth fractional functions
xn, |x|n, where n = 1/4, 1/3, 1/2, 2/3, 3/4, 3/2, -1/4, -1/3, -1/2, -2/3, -3/4, -3/2, x / (1+|x|), x / (1+x2), 1 / (1+|x|), 1 / (1+x2),
1 / (|x|+1), 1 / (√|x|+1), 1 / (ln(1+|x|)+1)
Polynomial
x, x2, x3,
1/x, x-2, x-3
Power (absolute value)
|x|n, where -3.0 ≤ n ≤ 3.0
Power (plain x)
xn, where -3.0 ≤ n ≤ 3.0
Exponential, trigonometric, polynomial, rational and power functions up to ±5
Exponential
exp(x)2, exp(x), exp(-x), exp(-|x|), exp(-x2), exp(x)-1, ln(1+exp(x))
Hyperbolic
sinh(x), cosh(x), tanh(x), 1 / cosh(x)
Trigonometric
sin(x), cos(x), sin(x)2, cos(x)2,
cos(x)·exp(-x2), sin(x)·exp(-x2), cos(x)·exp(-|x|), sin(x)·exp(-|x|)
Logarithmic
ln(x), (ln(x))2, (ln(x))3, (ln(x))-1,
(ln(1+|x|))2, (ln(1+|x|))3
Rational and smooth fractional functions
xn, |x|n, where n = 1/4, 1/3, 1/2, 2/3, 3/4, 3/2, -1/4, -1/3, -1/2, -2/3, -3/4, -3/2, x / (1+|x|), x / (1+x2), 1 / (1+|x|), 1 / (1+x2),
1 / (|x|+1), 1 / (√|x|+1), 1 / (ln(1+|x|)+1)
Polynomial
x, x2, x3, x4, x5,
1/x, x-2, x-3, x-4, x-5
Power (absolute value)
|x|n, where -5.0 ≤ n ≤ 5.0
Power (plain x)
xn, where -5.0 ≤ n ≤ 5.0
Simplified exponential, trigonometric, polynomial, rational and power functions (±3)
Exponential
exp(x), exp(-x), exp(-|x|), exp(-x2)
Hyperbolic
sinh(x), cosh(x), tanh(x), 1 / cosh(x)
Trigonometric
sin(x), cos(x), sin(x)2, cos(x)2, arctan(x)
Logarithmic
ln(x), (ln(x))2, (ln(x))3, (ln(x))-1
Rational
xn, |x|n, where n = 1/4, 1/3, 1/2, 2/3, 3/4, 3/2, -1/4, -1/3, -1/2, -2/3, -3/4, -3/2
Polynomial
x, x2, x3,
1/x, x-2, x-3
Power (absolute value)
|x|n, where -3.0 ≤ n ≤ 3.0
Power (plain x)
xn, where -3.0 ≤ n ≤ 3.0
Polynomial, rational and power functions up to ±5
Polynomial
x, x2, x3, x4, x5,
1/x, x-2, x-3, x-4, x-5
Rational
xn, |x|n, where n = 1/4, 1/3, 1/2, 2/3, 3/4, 3/2, -1/4, -1/3, -1/2, -2/3, -3/4, -3/2
Power (absolute value)
|x|n, where -5.0 ≤ n ≤ 5.0
Power (plain x)
xn, where -5.0 ≤ n ≤ 5.0
Polynomial, rational and power functions up to ±4
Polynomial
x, x2, x3, x4,
1/x, x-2, x-3, x-4
Power (absolute value)
|x|n, where -4.0 ≤ n ≤ 4.0
Power (plain x)
xn, where -4.0 ≤ n ≤ 4.0
⭐ Polynomial, rational and power functions up to ±3
Polynomial
x, x2, x3,
1/x, x-2, x-3
Rational
xn, |x|n, where n = 1/4, 1/3, 1/2, 2/3, 3/4, 3/2, -1/4, -1/3, -1/2, -2/3, -3/4, -3/2
Power (absolute value)
|x|n, where 0.05 ≤ n ≤ 3.0
Power (plain x)
xn, where -3.0 ≤ n ≤ 3.0
Polynomial, rational and power functions up to ±3 — detailed search
Note: This option is similar to ⭐ Polynomial and power functions up to ±3, but the search is performed in a more fine-grained way (denser sampling of exponents).
Polynomial
x, x2, x3,
1/x, x-2, x-3
Rational
xn, |x|n, where n = 1/4, 1/3, 1/2, 2/3, 3/4, 3/2, -1/4, -1/3, -1/2, -2/3, -3/4, -3/2
Power (absolute value)
|x|n, where -3.0 ≤ n ≤ 3.0
Power (plain x)
xn, where -3.0 ≤ n ≤ 3.0