sin(x)^2

combine Combine terms of the same algebraic structure. combine(S) tries to rewrite products of powers in the expression S as a single power. combine(S, T) combines several calls to the target function T in the expression f to a single call. The target T is specified as one of the strings 'atan', 'exp', 'gamma', 'log', 'sincos', 'sinhcosh'. combine(..., 'IgnoreAnalyticConstraints',VAL) controls the level of mathematical rigor to use on the analytical constraints while combining (branch cuts, division by zero, and so on). Here, VAL can be TRUE or FALSE. If you use TRUE, then combine uses a set of mathematical rules, such as ln(a) + ln(b) = ln(a*b), that are not generally correct, but can give simpler results. The default is FALSE. Examples: combine(2^x * 3^x) returns 6^x combine((2^x)^i) returns (2^x)^i combine((2^x)^i, 'IgnoreAnalyticConstraints', true) returns 2^(x*i) combine(log(x) + log(y), 'log') returns log(x) + log(y) combine(log(x) + log(y), 'log', 'IgnoreAnalyticConstraints', true) returns log(x*y) See also sym/simplify, sym/expand, sym/factor Documentation for sym/combine doc sym/combine