If y = 2^x, find dy/dx at x = 1.

Practice Questions

Q1
If y = 2^x, find dy/dx at x = 1.
  1. 0.693
  2. 1.386
  3. 2.718
  4. 3.141

Questions & Step-by-Step Solutions

If y = 2^x, find dy/dx at x = 1.
Correct Answer: 1.386
  • Step 1: Identify the function given in the question, which is y = 2^x.
  • Step 2: To find dy/dx, we need to use the rule for differentiating exponential functions. The derivative of a^x is a^x * ln(a), where a is a constant.
  • Step 3: In our case, a = 2. So, we apply the rule: dy/dx = 2^x * ln(2).
  • Step 4: Now, we need to find dy/dx specifically at x = 1. Substitute x = 1 into the derivative we found: dy/dx = 2^1 * ln(2).
  • Step 5: Calculate 2^1, which is 2. Then, find ln(2), which is approximately 0.693.
  • Step 6: Multiply the results from Step 5: dy/dx = 2 * 0.693.
  • Step 7: Finally, calculate the multiplication: 2 * 0.693 = 1.386.
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