5.5 The Substitution Rule/5

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://en.wikipedia.org/api/rest_v1/":): {\displaystyle \int \cos^{3}{(\theta)}\sin{(\theta)}d{\theta)} \text{,} \quad u=\cos{(\theta)} }