i need help understand how to approach this problem

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c. Consider the indefinite integral sec? (x) + sec(x) tan(x) dx. sec(x) + tan(x) Evaluate this integral using the substitution u = sec(x) + tan(x). d. Simplify the integrand in (c) by factoring the numerator. What is a far simpler way to write the integrand? e. Combine your work in (c) and (d) to determine f sec(x) dr