5.4 Indefinite Integrals and the Net Change Theorem/17

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17.

<math>\int1+tan^2 x*dx<math> <math>\int1+\frac{sin^2x}{cos^2x}*dx<math> <math>\int\frac{cos^2x+sin^2x}{cos^2x}\*dx<math> <math>\cos^2x+sin^2x=1<math> <math>\int\frac{1}{cos^2x}*dx<math> <math>\int\sec^2x\*dx<math> <math>tanx+C\<math>