Calculus II - Chapter 7 Problem Set
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Questions and Answers

What is the derivative of the function $y = 4sin x$?

  • 4sin x
  • 4
  • 4tan x
  • 4cos x (correct)

The derivative of $f(x) = ln(x^2 + 3)$ involves using the chain rule.

True (A)

What is the integral of $dx / (9 + x^2)$?

arctan(x/3) + C

The derivative of $f(θ) = ln(sec(θ) + tan(θ))$ is ______.

<p>sec(θ)tan(θ) + sec^2(θ)</p> Signup and view all the answers

Match the following functions with their derivatives:

<p>y = 4x = 4 f(x) = 4 - x = -1 y = ln(2x) = 1/x f(θ) = sec(θ) = sec(θ)tan(θ)</p> Signup and view all the answers

What is the result of the definite integral $\int_0^1 \sqrt{1 - x^2} , dx$?

<p>$\frac{\pi}{4}$ (C)</p> Signup and view all the answers

The integral $\int \frac{dx}{\sqrt{9 - x^2}}$ leads to an inverse trigonometric function.

<p>True (A)</p> Signup and view all the answers

Find the derivative of $y = 4 - x$.

<p>-1</p> Signup and view all the answers

Flashcards

Derivative of y = 4x

The derivative of a function y = 4x is simply 4. This is because the derivative of a constant times x is just the constant itself.

Derivative of f(x) = 4 - x

The derivative of the function f(x) = 4 - x is -1. The derivative of a constant is 0, and the derivative of -x is -1.

Derivative of y = 4sin(x)

The derivative of y = 4sin(x) is 4cos(x). The derivative of sin(x) is cos(x), and the constant 4 stays the same.

Derivative of y = ln(2x)

The derivative of y = ln(2x) is 1/x. The derivative of ln(x) is 1/x, and the constant 2 disappears due to the chain rule.

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Derivative of ln(x^2 + 3)

Applying the chain rule, the derivative of ln(x^2 + 3) is (2x)/(x^2 + 3). This comes from the derivative of ln(u) = 1/u * u' where u = x^2 + 3.

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Derivative of f(θ) = ln(sec(θ) + tan(θ))

Using chain rule and the derivative of sec(x) and tan(x), the derivative of f(θ) = ln(sec(θ) + tan(θ)) is sec(θ). This involves applying the chain rule and understanding the derivatives of trigonometric functions.

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Derivative of y = ((2x+1)^10)/((x-3)^5*2)

The derivative of y = ((2x+1)^10)/((x-3)^5*2) is found by using the quotient rule. This rule states that for a function f(x) = g(x)/h(x), the derivative f'(x) = (h(x) * g'(x) - g(x) * h'(x)) / (h(x))^2.

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Derivative of sin⁻¹(x²)

The derivative of sin⁻¹(x²) is (2x) / √(1 - x⁴). This is derived by applying the chain rule and the derivative of sin⁻¹(x), which is 1/√(1 - x²)

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Study Notes

Calculus II - Chapter 7 Problem Set

  • Finding Derivatives: The problem set includes exercises requiring the determination of derivatives for various functions.

  • Functions: The document presents diverse functions, including constants, polynomials, trigonometric functions, natural logarithms, and composite functions.

  • Derivatives of Simple Functions: Examples show differentiation of basic functions like y = 4, f(x) = 4 - x, and y = 4sinx.

  • Chain Rule, Product Rule, Quotient Rule: The included exercises incorporate these differentiation rules, focusing on the application to more complex functions. Ex: finding dy/dx if y = (x² + 1)(x + 3)½ / (x - 1), for x > 1.

  • Logarithmic Differentiation: Finding derivatives of functions involving natural logarithms, such as y = ln 2x and ln(x² + 3).

  • Inverse Trigonometric Functions: The document contains a table outlining derivatives for inverse trigonometric functions (arcsin, arctan, arccos, arccot, arcsec, arccsc).

  • Examples: Illustrative examples demonstrate finding the derivatives of composite functions involving inverse trigonometric functions and hyperbolic functions.

  • Hyperbolic Functions: Derivatives and integrals related to hyperbolic functions (sinh, cosh, tanh, coth, sech, csch), are presented.

  • Integral Evaluation: The document covers evaluating definite integrals related to inverse trigonometric functions.

  • Examples of Definite and Indefinite Integrals: Various integral expressions are included, requiring the application of integral formulas for inverse trig, hyperbolic and related functions.

  • Rate of Growth: Principles for comparing growth rates of different functions (e.g., exponential, polynomial) are introduced at the end.

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Description

This problem set focuses on finding derivatives of various functions, including constants, polynomials, and trigonometric functions. Exercises feature the application of differentiation rules such as the chain rule, product rule, and quotient rule, along with logarithmic and inverse trigonometric differentiation. It's designed to enhance understanding of derivative concepts in calculus.

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