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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
plot(tanh(x)+tanh(y))/3
expr:
X:
Y:
R:
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helpful(search term)
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help(function)