What is the integral of (x*sec^2(x)) ?

The integral of (x*sec^2(x)) is xtan(x)+ln|cos(x)|+C

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integral of (x*sec^2(x))

\int (x \cdot sec^{2} (x)) d x

x tan (x) + ln ∣ cos (x) ∣ + C

Solution steps

\int x sec^{2} (x) d x

Apply Integration By Parts

: x tan (x) - \int tan (x) d x

= x tan (x) - \int tan (x) d x

\int tan (x) d x = - ln ∣ cos (x) ∣

= x tan (x) - (- ln ∣ cos (x) ∣)

Simplify

= x tan (x) + ln ∣ cos (x) ∣

Add a constant to the solution

= x tan (x) + ln ∣ cos (x) ∣ + C

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\frac{d}{d x} (x^{2} - 4 x + 7)

\int \frac{x ^{2} + 2 x + 8}{x ^{4} - 4 x ^{2}} d x

What is the integral of (x*sec^2(x)) ?
The integral of (x*sec^2(x)) is xtan(x)+ln|cos(x)|+C