What is the slope of the tangent line to the curve y = x^2 + 2x at x = 1?

Practice Questions

Q1
What is the slope of the tangent line to the curve y = x^2 + 2x at x = 1?
  1. 3
  2. 4
  3. 2
  4. 1

Questions & Step-by-Step Solutions

What is the slope of the tangent line to the curve y = x^2 + 2x at x = 1?
  • Step 1: Identify the function given in the question, which is y = x^2 + 2x.
  • Step 2: Find the derivative of the function. The derivative tells us the slope of the tangent line. For y = x^2 + 2x, the derivative is y' = 2x + 2.
  • Step 3: Substitute the value of x into the derivative to find the slope at that point. We need to find the slope at x = 1.
  • Step 4: Calculate y' at x = 1. Substitute 1 into the derivative: y' = 2(1) + 2.
  • Step 5: Simplify the expression: y' = 2 + 2 = 4.
  • Step 6: Conclude that the slope of the tangent line to the curve at x = 1 is 4.
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