texmath-0.6.7: tests/writers/05.tex
{\int }_{{a}}^{{x}} \! \! \!{\int }_{{a}}^{{s}}{f}({y}) \,{d}{y} \,{d}{s}={\int }_{{a}}^{{x}}{f}({y})({x}-{y}) \,{d}{y}{\int }_{{a}}^{{x}} \! \! \!{\int }_{{a}}^{{s}}{f}({y}) \,{d}{y} \,{d}{s}={\int }_{{a}}^{{x}}{f}({y})({x}-{y}) \,{d}{y}