Evaluate the integrals in Exercises 39–56.
39. ∫(from -3 to -2)dx/x

Each of Exercises 25–36 gives a formula for a function y=f(x). In each case, find f^(-1)(x) and identify the domain and range of f^(-1). As a check, show that f(f^(-1)(x))=f^(-1)(f(x))=x.

f(x) = x² − 2x, x ≤ 1

Which of the functions graphed in Exercises 1–6 are one-to-one, and which are not?

"In Exercises 59–86, find the derivative of y with respect to the given independent variable.

63. y = x^π"

In Exercises 7–26, find the derivative of y with respect to x, t, or θ, as appropriate.

y = ln(3te^(-t))

Evaluate the integrals in Exercises 111–114.

113. ∫₁^(1/x) (1 / t) dt,x > 0

84. Find lim(x→∞) (√(x² + 1) - √x).