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Trigonometric Substitution Techniques by Allen Lois Lanuza is a document available to read on EtoBox.
1) When the integrand contains expressions of the form √a2 - u2, let u = a sinθ so that the integrand becomes a cosθ, which can be integrated. 2) When the integrand contains expressions of the form √u2 - a2, let u = a secθ so that the integrand becomes a tanθ, which can be integrated. 3) Trigonometric substitutions allow integrals containing certain radical expressions to be rewritten in terms of trigonometric functions that are integrable.
- Author
- Allen Lois Lanuza
- Language
- EN