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Understanding Calculus Derivatives and Antiderivatives

Learn about derivatives, antiderivatives, and logarithmic functions in calculus. Solve problems involving derivatives to find relative maximum values. Understand the Power Rule and the natural logarithmic function. Explore properties and examples of logarithms. Enhance your calculus skills with this comprehensive guide.

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Understanding Calculus Derivatives and Antiderivatives

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  1. Problem of the Day - Calculator If the derivative of f is given by f '(x) = ex - 3x2, at which of the following values of x does f have a relative maximum value? A) -0.46 B) 0.20 C) 0.91 D) 0.95 E) 3.73

  2. Problem of the Day - Calculator If the derivative of f is given by f '(x) = ex - 3x2, at which of the following values of x does f have a relative maximum value? A) -0.46 B) 0.20 C) 0.91 D) 0.95 E) 3.73

  3. Recall the Power Rule ∫xn dx = xn + 1 + c where n≠-1 n + 1 What is the antiderivative if n is -1?

  4. Recall the Power Rule ∫xn dx = xn + 1 + c where n≠-1 n + 1 What is the antiderivative if n is -1? We define it to be the natural logarithmic function.

  5. Logarithms were invented by the Scottish theologian and mathematician John Napier.

  6. is area under curve from 1 to x and is positive is area under curve from 1 to x and is negative

  7. What if x = 1?

  8. What if x = 1? It is 0 because upper and lower limits are equal thus ln(1) = 0.

  9. Properties of the Natural Log Function Domain (0, ∞) Range (-∞, ∞) Continuous Increasing 1 to 1 Concave Downward

  10. General Log Properties ln(1) = 0 ln(ab) = ln(a) + ln(b) ln(an) = n ln(a) ln(a/b) = ln(a) - ln(b) logb a = x means bx = a

  11. General Log Properties ln(1) = 0 ln(ab) = ln(a) + ln(b) ln(an) = n ln(a) ln(a/b) = ln(a) - ln(b) Example

  12. Remember - when rewriting logarithms check to see if the domain of the rewritten function is the same as the original Example ln x2 the domain is all reals except x = 0 2ln x is all positive reals

  13. Logarithms are defined in terms of a base number Common logs have a base of 10 because log10 10 = 1 (101=10) Natural logs have a base of ≈2.71828182846. . . which has been defined as e (Euler Number) because ln e = =1

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