In Exercises 27–32, find dy/dx.
e^(2x)=sin(x+3y)

Evaluate the integrals in Exercises 87–96.

89. ∫₀¹ 2^(−θ) dθ

For problems 49–52 use implicit differentiation to find dy/dx at the given point P.

51. y arccos(xy) = -3√2/4 π; P(1/2, -√2)

L’Hôpital’s Rule

Find the limits in Exercises 103–110.

105. lim(x→∞) x arctan(2/x)

In Exercises 1–4, solve for t.

e^(sqrt(t)) = x^2

Use l’Hôpital’s rule to find the limits in Exercises 7–52.

17. lim (θ → π/2) (2θ - π) / cos(2π - θ)

Show that increasing functions and decreasing functions are one-to-one. That is, show that for any x₁ and x₂ in I, x₂ ≠ x₁ implies f(x₂) ≠ f(x₁).