Math Problem Statement

Graph the following function. Show at least two cycles. Use the graph to determine the domain and range of the function. yequals=negative 2 sine x−2sinx

Solution

Here is the graph of the function y=2sin(x)y = -2 \sin(x), displaying two complete cycles.

Domain and Range:

  • Domain: (,)(-\infty, \infty), as the sine function is defined for all real xx.
  • Range: [2,2][-2, 2], since the function oscillates between -2 and 2 due to the amplitude of 2 and the reflection caused by the negative sign.

Would you like further details on interpreting sinusoidal functions or any specific aspects of this graph?

Related Questions:

  1. How would the graph change if the amplitude was 3 instead of 2?
  2. What effect would a phase shift have on this sine function?
  3. How would a vertical shift, such as y=2sin(x)+1y = -2 \sin(x) + 1, alter the range?
  4. Can you identify key points of y=2sin(x)y = -2 \sin(x) over one period?
  5. What would happen to the period if we had y=2sin(2x)y = -2 \sin(2x) instead?

Tip:

For sinusoidal functions, always check amplitude, period, phase shifts, and vertical shifts to understand how the function will appear on the graph.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Graphing Trigonometric Functions
Sine Function

Formulas

y = A sin(Bx + C) + D for sinusoidal functions

Theorems

Properties of Sine Function
Domain and Range of Sine Function

Suitable Grade Level

Grades 10-12