Evaluate the integral: ∫17w2⁡ln(w) dw

1 3 [ w 3 ⁡ ln ( w ) - w 3 3 ] ∣ 1 , 7

Evaluate the integral: ∫ 1 7 w 2 ⁡ ln ( w ) d w

1 3 [ w 3 ⁡ ln ( w ) - w 3 3 ] ∣ 1 , 7

1 2 [ w 2 ⁡ ln ( w ) - w 2 2 ] ∣ 1 , 7

Table of contents

Skip topic navigation

0. Functions7h 52m
1. Limits and Continuity2h 2m
2. Intro to Derivatives1h 33m
3. Techniques of Differentiation3h 18m
4. Applications of Derivatives2h 38m
5. Graphical Applications of Derivatives6h 2m
6. Derivatives of Inverse, Exponential, & Logarithmic Functions2h 37m
7. Antiderivatives & Indefinite Integrals1h 26m
8. Definite Integrals4h 44m
9. Graphical Applications of Integrals2h 27m
- Area Between Curves
  1h 18m
- Introduction to Volume & Disk Method
  1h 8m
10. Physics Applications of Integrals 3h 16m
- Kinematics
  1h 13m
- Work
  2h 3m
11. Integrals of Inverse, Exponential, & Logarithmic Functions2h 34m
12. Techniques of Integration7h 39m
13. Intro to Differential Equations2h 55m
14. Sequences & Series5h 36m
15. Power Series2h 19m
- Introduction to Power Series
  1h 9m
- Taylor Series & Taylor Polynomials
  1h 10m
16. Parametric Equations & Polar Coordinates7h 58m

7. Antiderivatives & Indefinite Integrals

Integrals of Trig Functions

Calculus

7. Antiderivatives & Indefinite Integrals

Integrals of Trig Functions

Previous problemNext problem

Struggling with Calculus?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Evaluate the integral: $\int_{1}^{7} w^{2} \ln (w) d w$

[w^{2} \ln (w) - w^{2}] ∣ 1, 7

\frac{1}{2} [w^{2} \ln (w) - \frac{w^{2}}{2}] ∣ 1, 7

\int_{1}^{7} \ln (w) d w = [w \ln (w) - w] ∣ 1, 7

\frac{1}{3} [w^{3} \ln (w) - \frac{w^{3}}{3}] ∣ 1, 7

Previous problemNext problem

Verified step by step guidance

Step 1: Recognize that the integral $ \int_1^7 w^2 \ln(w) \, dw $ involves a product of functions $ w^2 $ and $ \ln(w) $. This suggests using integration by parts, which is given by $ \int u \, dv = uv - \int v \, du $.

Step 2: Choose $ u = \ln(w) $ (since its derivative simplifies) and $ dv = w^2 \, dw $. Compute $ du = \frac{1}{w} \, dw $ and $ v = \frac{w^3}{3} $ (by integrating $ w^2 $).

Step 3: Substitute into the integration by parts formula: $ \int w^2 \ln(w) \, dw = \frac{w^3}{3} \ln(w) - \int \frac{w^3}{3} \cdot \frac{1}{w} \, dw $. Simplify the second integral to $ \int \frac{w^3}{3} \cdot \frac{1}{w} \, dw = \int \frac{w^2}{3} \, dw $.

Step 4: Compute $ \int \frac{w^2}{3} \, dw $. Factor out $ \frac{1}{3} $ and integrate $ w^2 $ to get $ \frac{1}{3} \cdot \frac{w^3}{3} = \frac{w^3}{9} $. Substitute this result back into the expression from Step 3.

Step 5: Combine terms to express the integral as $ \frac{w^3}{3} \ln(w) - \frac{w^3}{9} $. Evaluate this expression at the bounds $ w = 7 $ and $ w = 1 $ to find the definite integral value.