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Ch. 3 - Derivatives
Hass - Thomas' Calculus 15th Edition
Hass15th EditionThomas' CalculusISBN: 9780137616077Not the one you use?Change textbook
All textbooksHass 15th EditionCh. 3 - DerivativesProblem 3.5.53b
Chapter 3, Problem 3.5.53b

By computing the first few derivatives and looking for a pattern, find the following derivatives.


b. d¹¹⁰/dx¹¹⁰ (sin x − 3 cos x)

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1
First, identify the function for which we need to find the 110th derivative: f(x) = sin(x) - 3cos(x).
Compute the first derivative: f'(x) = cos(x) + 3sin(x).
Compute the second derivative: f''(x) = -sin(x) + 3cos(x).
Compute the third derivative: f'''(x) = -cos(x) - 3sin(x).
Observe the pattern in the derivatives: The derivatives repeat every four steps. Use this pattern to determine the 110th derivative by finding the remainder of 110 divided by 4.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Higher Order Derivatives

Higher order derivatives refer to the derivatives of a function taken multiple times. For example, the second derivative is the derivative of the first derivative. In this problem, you need to compute the 110th derivative, which involves identifying a pattern in the derivatives of the given function.
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Higher Order Derivatives

Trigonometric Derivatives

Understanding the derivatives of trigonometric functions is crucial. The derivative of sin(x) is cos(x), and the derivative of cos(x) is -sin(x). These derivatives repeat in a cycle, which is key to identifying patterns when computing higher order derivatives of trigonometric expressions.
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Derivatives of Other Inverse Trigonometric Functions

Pattern Recognition in Derivatives

When computing higher order derivatives, recognizing patterns can simplify the process. For trigonometric functions, derivatives often repeat in cycles. By calculating the first few derivatives, you can identify the cycle length and predict the 110th derivative without computing each one individually.
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