Find the definite integral.
Find the definite integral.
Find the area of from to .
7–84. Evaluate the following integrals.
33. ∫ [eˣ / (a² + e²ˣ)] dx, where a ≠ 0
Evaluate the following integrals.
∫ e³ˣ/(eˣ - 1) dx
7–40. Table look-up integrals Use a table of integrals to evaluate the following indefinite integrals. Some of the integrals require preliminary work, such as completing the square or changing variables, before they can be found in a table.
40. ∫ (e³ᵗ / √(4 + e²ᵗ)) dt
Evaluate ∫ 4ˣ dx.
29–62. Integrals Evaluate the following integrals. Include absolute values only when needed.
∫ 3^{-2x} dx
29–62. Integrals Evaluate the following integrals. Include absolute values only when needed.
∫₀ˡⁿ ² (e^{3x} − e^{−3x}) / (e^{3x} + e^{−3x}) dx
29–62. Integrals Evaluate the following integrals. Include absolute values only when needed.
∫₀^{π/2} 4^{sin x} cos x dx
37–56. Integrals Evaluate each integral.
∫ eˣ/(36 – e²ˣ), x < ln 6
Energy consumption On the first day of the year (t=0), a city uses electricity at a rate of 2000 MW. That rate is projected to increase at a rate of 1.3% per year.
b. Find the total energy (in MW-yr) used by the city over four full years beginning at t=0.
Energy consumption On the first day of the year (t=0), a city uses electricity at a rate of 2000 MW. That rate is projected to increase at a rate of 1.3% per year.
c. Find a function that gives the total energy used (in MW-yr) between t=0 and any future time t>0.
2–9. Integrals Evaluate the following integrals.
∫ (eˣ / (4eˣ + 6)) dx
2–9. Integrals Evaluate the following integrals.
∫₁⁴ (10^{√x} / √x) dx
Oil consumption Starting in 2018 (t=0), the rate at which oil is consumed by a small country increases at a rate of 1.5%/yr, starting with an initial rate of 1.2 million barrels/yr.
b. Find the function that gives the amount of oil consumed between t=0 and any future time t.