Operations with functions #57
Description
When i use LaTeX expressions like '\\sin(x)+\\cos(x)', the produced output is 'sin(x)cos(x)', but the output should be 'sin(x)+cos(x)'; the same happends with operators like +,-,*,/ and expressions like \\sin(x)+\\cos(x)+...+\\tan(x) or \\sin(x)+\\frac{3x}{2}. It seems that only happens when the LaTeX expression have a trigonometric function and later an operator.