exp(1)    % e
pi        % pi
sqrt(x)   % square root
log(x)    % natural logarithm
log2(x)   % logarithm base 2
log10(x)  % logarithm base 10
exp(x)    % exponential
abs(-x)   % absolute value
floor(x)  % floor
ceil(x)   % ceiling
x^y       % power