Integral of (5x+7)^28: Step-by-Step Solution

In summary, the formula for finding the integral of a polynomial function is ∫(ax^n) dx = (a/(n+1))x^(n+1) + C, where a is the coefficient of x and n is the power of x. The power rule for integration states that the integral of x^n is (x^(n+1))/(n+1) + C and it is applied to each term in the polynomial. The purpose of adding the constant of integration (C) is to account for all possible values that could have been differentiated to get the original function. The integral of a polynomial function can be further simplified by using algebraic techniques. There are various methods and algorithms for finding the integral of a polynomial function
  • #1
ppkjref
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Homework Statement


S=integral symbol
S(5x+7)^28


Homework Equations


Substitution


The Attempt at a Solution


let u = 5x+7
du = 5
S u^28 du
= (u^29)/29 du
= [5(5x+7)^29]/29

is this correct? I'm not sure...
 
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  • #2
Where did the extra 5 come from?
 
  • #3
nevermind i figured it out the answer is [(5x+7)^29]/145. stupid mistakes
 
  • #4
Yea, that looks right.
 

FAQ: Integral of (5x+7)^28: Step-by-Step Solution

What is the formula for finding the integral of a polynomial function?

The formula for finding the integral of a polynomial function is ∫(ax^n) dx = (a/(n+1))x^(n+1) + C, where a is the coefficient of x and n is the power of x.

What is the power rule for integration and how is it applied in this problem?

The power rule for integration states that the integral of x^n is (x^(n+1))/(n+1) + C. In this problem, we have the polynomial (5x+7)^28, so we need to apply the power rule to each term inside the parentheses, resulting in (5/(28+1))x^(28+1) + (7/(1+1))x^(1+1) + C. This simplifies to (5/29)x^29 + (7/2)x^2 + C.

What is the purpose of adding the constant of integration (C) in the solution?

The constant of integration is added to the solution because when a function is differentiated, the constant term disappears. Therefore, when we integrate a function, we need to add a constant to represent all the possible values that could have been differentiated to get the original function.

Can the integral of a polynomial function be simplified further?

Yes, the integral of a polynomial function can be simplified further by using algebraic techniques such as factoring, expanding, or combining like terms. In this problem, we can simplify the solution to (5/29)x^29 + (7/2)x^2 + C = (5x^29)/29 + (7x^2)/2 + C.

Is there a specific method or algorithm for finding the integral of a polynomial function?

Yes, there are several methods and algorithms for finding the integral of a polynomial function, such as the power rule, substitution, integration by parts, and partial fractions. However, the method used depends on the type of polynomial and the level of complexity.

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