Calculus 101

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Questions and Answers

What is the main focus of calculus?

  • Study of geometric shapes
  • Study of discrete mathematics
  • Study of continuous change (correct)
  • Study of algebraic structures

Who are the two main developers of calculus?

  • Isaac Newton and Archimedes
  • Isaac Newton and Gottfried Wilhelm Leibniz (correct)
  • Gottfried Wilhelm Leibniz and Euclid
  • Archimedes and Euclid

What is the geometric interpretation of a derivative?

  • The slope of the tangent line to the graph of the function (correct)
  • The maximum value of the function
  • The area under the curve
  • The rate of change of the function with respect to its input

What is the physical interpretation of a derivative?

<p>The rate of change of a quantity over time (B)</p> Signup and view all the answers

What is the power rule of differentiation?

<p>If f(x) = x^n, then f'(x) = nx^(n-1) (B)</p> Signup and view all the answers

What is the fundamental theorem of calculus?

<p>It relates the derivative of an antiderivative to the original function (D)</p> Signup and view all the answers

What is one of the main applications of calculus in physics?

<p>Modeling the motion of objects, including the acceleration and velocity of particles (D)</p> Signup and view all the answers

What is one of the main applications of calculus in economics?

<p>Modeling the behavior of economic systems, including the optimization of profit (C)</p> Signup and view all the answers

The sine of an angle in a right triangle is always equal to the cosine of its complementary angle.

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

The law of cosines is only used for right triangles.

<p>False (B)</p> Signup and view all the answers

The Pythagorean identity is sin^2(A) + cos^2(A) = 0.

<p>False (B)</p> Signup and view all the answers

Trigonometry is only used in navigation and physics.

<p>False (B)</p> Signup and view all the answers

The cotangent of an angle is always equal to the reciprocal of the tangent.

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

The graph of the sine function is a linear function.

<p>False (B)</p> Signup and view all the answers

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Study Notes

Calculus

Definition

  • Branch of mathematics that deals with the study of continuous change
  • Developed by Isaac Newton and Gottfried Wilhelm Leibniz in the 17th century

Two Main Branches

  • Differential Calculus: studies rates of change and slopes of curves
  • Integral Calculus: studies accumulation of quantities

Key Concepts

  • Limits: the value that a function approaches as the input gets arbitrarily close to a certain point
  • Derivatives: measures the rate of change of a function with respect to its input
    • Geometric Interpretation: the slope of the tangent line to the graph of the function at a point
    • Physical Interpretation: the rate at which a quantity changes over time
  • Integrals: measures the accumulation of a function over a given interval
    • Definite Integral: the area between a function and the x-axis over a specified interval
    • Indefinite Integral: the antiderivative of a function, which can be used to compute definite integrals

Rules and Theorems

  • Power Rule: if f(x) = x^n, then f'(x) = nx^(n-1)
  • Product Rule: if f(x) = u(x)v(x), then f'(x) = u'(x)v(x) + u(x)v'(x)
  • Chain Rule: if f(x) = g(h(x)), then f'(x) = g'(h(x)) * h'(x)
  • Fundamental Theorem of Calculus: relates the derivative of an antiderivative to the original function

Applications

  • Optimization: finding the maximum or minimum of a function
  • Physics: modeling the motion of objects, including the acceleration and velocity of particles and the curvature of space-time
  • Economics: modeling the behavior of economic systems, including the optimization of profit and the behavior of markets

Calculus

Definition and History

  • Calculus is a branch of mathematics that studies continuous change
  • Developed by Isaac Newton and Gottfried Wilhelm Leibniz in the 17th century

Two Main Branches

  • Differential Calculus: studies rates of change and slopes of curves
  • Integral Calculus: studies accumulation of quantities

Key Concepts in Differential Calculus

  • Limits: the value that a function approaches as the input gets arbitrarily close to a certain point
  • Derivatives: measure the rate of change of a function with respect to its input
  • Geometric Interpretation: the slope of the tangent line to the graph of the function at a point
  • Physical Interpretation: the rate at which a quantity changes over time

Key Concepts in Integral Calculus

  • Integrals: measure the accumulation of a function over a given interval
  • Definite Integral: the area between a function and the x-axis over a specified interval
  • Indefinite Integral: the antiderivative of a function, which can be used to compute definite integrals

Rules and Theorems in Differential Calculus

  • Power Rule: if f(x) = x^n, then f'(x) = nx^(n-1)
  • Product Rule: if f(x) = u(x)v(x), then f'(x) = u'(x)v(x) + u(x)v'(x)
  • Chain Rule: if f(x) = g(h(x)), then f'(x) = g'(h(x)) * h'(x)

Fundamental Theorem of Calculus

  • Relates the derivative of an antiderivative to the original function

Applications of Calculus

  • Optimization: finding the maximum or minimum of a function
  • Physics: modeling the motion of objects, including the acceleration and velocity of particles and the curvature of space-time
  • Economics: modeling the behavior of economic systems, including the optimization of profit and the behavior of markets

Trigonometry

Introduction

  • Trigonometry is the study of relationships between the sides and angles of triangles.

Angles and Triangles

  • Angles are measured in degrees, radians, or gradians.
  • A right triangle is a triangle with one right angle (90°).

Trigonometric Ratios

Basic Trigonometric Ratios

  • Sine (sin) is the ratio of the opposite side to the hypotenuse.
  • Cosine (cos) is the ratio of the adjacent side to the hypotenuse.
  • Tangent (tan) is the ratio of the opposite side to the adjacent side.
  • Cotangent (cot) is the ratio of the adjacent side to the opposite side.
  • Secant (sec) is the ratio of the hypotenuse to the adjacent side.
  • Cosecant (csc) is the ratio of the hypotenuse to the opposite side.

Trigonometric Identities

Pythagorean Identity

  • sin^2(A) + cos^2(A) = 1 is a fundamental identity in trigonometry.

Sum and Difference Identities

  • sin(A + B) = sin(A)cos(B) + cos(A)sin(B) is a sum identity.
  • cos(A + B) = cos(A)cos(B) - sin(A)sin(B) is a difference identity.

Graphs of Trigonometric Functions

Sine and Cosine Waves

  • A sine wave is a periodic wave with a maximum amplitude of 1 and a minimum amplitude of -1.
  • A cosine wave is a periodic wave with a maximum amplitude of 1 and a minimum amplitude of -1, shifted 90° from the sine wave.

Solving Triangles

Law of Sines

  • a / sin(A) = b / sin(B) = c / sin(C) is used to solve triangles.

Law of Cosines

  • a^2 = b^2 + c^2 - 2bc * cos(A) is used to solve triangles and find the third side.

Applications of Trigonometry

Real-World Applications

  • Navigation uses trigonometry to calculate distances and directions using triangulation.
  • Physics models periodic motion, such as sound waves and light waves, using trigonometry.
  • Engineering uses trigonometry to calculate stresses and strains in structures.

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