Some functions ...
plot(sin(-x)*pow(1.5,-r))
plot(pow(2,sin(y))*pow(2,sin(x))/12)
plot(sin(x*y/10)/10)
plot(sin(r)/r)
plot(tanh(x)+tanh(y))/3
plot((1/sqrt(2*pi))*e^(-(r^2)/2))
clear
helpful()
Y0(x) Y0 returns the order-zero Bessel function of the second kind.
asinh(x) asinh returns the inverse hyperbolic sine of x.
ceil(x) Ceil returns the least integer value greater than or equal to x.
cbrt(x) Cbrt returns the cube root of x.
floor(x) Floor returns the greatest integer value less than or equal to x.
inf(x) Inf returns positive infinity if sign >= 0, negative infinity if sign < 0.
logb(x) Logb returns the binary exponent of x.
remainder(x, y) Remainder returns the IEEE 754 floating-point remainder of x/y.
round(x) Round returns the nearest integer, rounding half away from zero.
atan(x) atan returns the arctangent, in radians, of x.
exp(x) Exp returns e**x, the base-e exponential of x.
ldexp(x, y) Ldexp is the inverse of Frexp. It returns frac × 2**exp.
log(x) Log returns the natural logarithm of x.
log10(x) Log10 returns the decimal logarithm of x.
The special cases are the same as for Log.
tan(x) Tan returns the tangent of the radian argument x.
Yn(x, y) Yn returns the order-n Bessel function of the second kind.
acos(x) acos returns the arccosine, in radians, of x.
dim(x, y) Dim returns the maximum of x-y or 0.
exp2(x) Exp2 returns 2**x, the base-2 exponential of x.
expm1(x) Expm1 returns e**x - 1, the base-e exponential of x minus 1.
It is more accurate than Exp(x) - 1 when x is near zero.
FMA(x, y, z) FMA returns x * y + z, computed with only one rounding.
(That is, FMA returns the fused multiply-add of x, y, and z.)
J1(x) J1 returns the order-one Bessel function of the first kind.i
nextafter(x, y) Nextafter returns the next representable float64 value after x towards y.
sinh(x) Sinh returns the hyperbolic sine of x.
log1p(x) Log1p returns the natural logarithm of 1 plus its argument x.
It is more accurate than Log(1 + x) when x is near zero.
min(x, y) Min returns the smaller of x or y.
mod(x, y) Mod returns the floating-point remainder of x/y.  The magnitude of the
result is less than y and its sign agrees with that of x.
sqrt(x) Sqrt returns the square root of x.
tanh(x) Tanh returns the hyperbolic tangent of x.
Y1(x) Y1 returns the order-one Bessel function of the second kind.
cos(x) cos returns the cosin of the radian argument x.
acosh(x) acosh returns the inverse hyperbolic cosine of x.
gamma(x) Gamma returns the Gamma function of x.
asin(x) asin returns the arcsine, in radians, of x.
atanh(x) atanh returns the inverse hyperbolic tangent of x.
atan2(x, y) atan2 returns the arc tangent of y/x, using the signs of the two to
determine the quadrant of the return value.
abs(x) Abs returns the absolute value of x.
copysign(x, y) Copysign returns a value with the magnitude of x and the sign of y.
hypot(x) Hypot returns Sqrt(p*p + q*q), taking care to avoid
unnecessary overflow and underflow.
Jn(x, y) Jn returns the order-n Bessel function of the first kind.
pow10(x) Pow10 returns 10**n, the base-10 exponential of n.
J0(x) J0 returns the order-zero Bessel function of the first kind.
log2(x) Log2 returns the binary logarithm of x.
The special cases are the same as for Log.
max(x, y) Max returns the larger of x or y.
pow(x, y) Pow returns x**y, the base-x exponential of y.
roundtoeven(x) RoundToEven returns the nearest integer, rounding ties to even.
sin(x) Sin returns the sine of the radian argument x.
trunc(x) Trunc returns the integer value of x.

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