Math Problem Statement

integrate

Solution

The text extraction wasn't very clear. However, based on the visible parts, it seems we need to integrate the following functions:

  1. csc(4x+3)cot(4x+3)\csc(4x+3)\cot(4x+3)
  2. 1(2x+3)3\frac{1}{(2x+3)^3}
  3. 13x+2\frac{1}{3x+2}
  4. csc2(711x)\csc^2(7-11x)
  5. e64xe^{6-4x}

Let's find the integrals for each of these functions:

a) csc(4x+3)cot(4x+3)\csc(4x+3)\cot(4x+3)

The integral of csc(u)cot(u)\csc(u)\cot(u) is csc(u)-\csc(u). Let u=4x+3u = 4x + 3.

csc(4x+3)cot(4x+3)dx=csc(4x+3)14+C=14csc(4x+3)+C\int \csc(4x+3)\cot(4x+3) \, dx = -\csc(4x+3) \cdot \frac{1}{4} + C = -\frac{1}{4}\csc(4x+3) + C

b) 1(2x+3)3\frac{1}{(2x+3)^3}

Use the substitution u=2x+3u = 2x + 3, hence du=2dxdu = 2dx.

1(2x+3)3dx=1u3du2=12u3du=12u22+C=14(2x+3)2+C\int \frac{1}{(2x+3)^3} \, dx = \int \frac{1}{u^3} \cdot \frac{du}{2} = \frac{1}{2} \int u^{-3} \, du = \frac{1}{2} \cdot \frac{u^{-2}}{-2} + C = -\frac{1}{4(2x+3)^2} + C

c) 13x+2\frac{1}{3x+2}

Use the substitution u=3x+2u = 3x + 2, hence du=3dxdu = 3dx.

13x+2dx=1udu3=131udu=13lnu+C=13ln3x+2+C\int \frac{1}{3x+2} \, dx = \int \frac{1}{u} \cdot \frac{du}{3} = \frac{1}{3} \int \frac{1}{u} \, du = \frac{1}{3} \ln|u| + C = \frac{1}{3} \ln|3x+2| + C

d) csc2(711x)\csc^2(7-11x)

The integral of csc2(u)\csc^2(u) is cot(u)-\cot(u). Let u=711xu = 7 - 11x.

csc2(711x)dx=cot(711x)111+C=111cot(711x)+C\int \csc^2(7-11x) \, dx = -\cot(7-11x) \cdot \frac{1}{-11} + C = \frac{1}{11}\cot(7-11x) + C

e) e64xe^{6-4x}

Use the substitution u=64xu = 6 - 4x, hence du=4dxdu = -4dx.

e64xdx=eudu4=14eu+C=14e64x+C\int e^{6-4x} \, dx = \int e^u \cdot \frac{du}{-4} = -\frac{1}{4} e^u + C = -\frac{1}{4} e^{6-4x} + C

Would you like details or have any questions on any of these integrals?

Follow-up Questions:

  1. Can you provide more examples of integrating trigonometric functions?
  2. How do you integrate functions involving square roots?
  3. What is the method to integrate rational functions?
  4. Can you show how to use partial fraction decomposition for integration?
  5. What is the process of integrating by parts?
  6. How do you handle integrals involving exponential functions?
  7. Can you explain how to integrate using trigonometric substitution?
  8. What are improper integrals and how are they evaluated?

Tip:

When integrating complex functions, consider using substitution to simplify the integral into a more recognizable form.

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Math Problem Analysis

Mathematical Concepts

Integration
Trigonometric Functions
Exponential Functions
Substitution Method

Formulas

Integration by substitution
Integration of trigonometric functions
Integration of exponential functions

Theorems

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Suitable Grade Level

College Level