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Evaluate the following.โˆซ(โˆ’2๐‘ฅ)d๐‘ฅ=

Question

Evaluate the following.โˆซ(โˆ’2๐‘ฅ)d๐‘ฅ=

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Solution

Sure, let's evaluate the integral step by step.

Given the integral: โˆซ(โˆ’2x)โ€‰dx \int (-2x) \, dx

Step 1: Identify the integrand. The integrand is โˆ’2x-2x.

Step 2: Apply the power rule for integration. The power rule for integration states that: โˆซxnโ€‰dx=xn+1n+1+C \int x^n \, dx = \frac{x^{n+1}}{n+1} + C where nโ‰ โˆ’1 n \neq -1 and C C is the constant of integration.

Step 3: Integrate โˆ’2x-2x. Here, โˆ’2x -2x can be written as โˆ’2โ‹…x1-2 \cdot x^1. Using the power rule: โˆซ(โˆ’2x)โ€‰dx=โˆ’2โˆซxโ€‰dx \int (-2x) \, dx = -2 \int x \, dx

Step 4: Integrate x x . โˆซxโ€‰dx=โˆซx1โ€‰dx=x1+11+1=x22 \int x \, dx = \int x^1 \, dx = \frac{x^{1+1}}{1+1} = \frac{x^2}{2}

Step 5: Multiply by the constant โˆ’2-2. โˆ’2โ‹…x22=โˆ’x2 -2 \cdot \frac{x^2}{2} = -x^2

Step 6: Add the constant of integration C C . โˆ’x2+C -x^2 + C

So, the evaluated integral is: โˆซ(โˆ’2x)โ€‰dx=โˆ’x2+C \int (-2x) \, dx = -x^2 + C

This problem has been solved

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