Math Problem Statement

Diketahui fungsi eksponen y = 2^x. Jika fungsi eksponen tersebut dirotasi sejauh 90° searah jarum jam, tentukan hasil rotasi dan gambar grafiknya (x = 3)...

Solution

The question is about rotating the exponential function y=2xy = 2^x by 90° clockwise and determining the coordinates when x=3x = 3.

Steps to solve:

  1. Find the coordinates before rotation: For x=3x = 3, calculate the corresponding yy value in the original function y=2xy = 2^x: y=23=8y = 2^3 = 8 So, the point before rotation is (3,8)(3, 8).

  2. Rotation by 90° clockwise: When a point (x,y)(x, y) is rotated by 90° clockwise, the new coordinates (x,y)(x', y') are given by: (x,y)=(y,x)(x', y') = (y, -x) Applying this to the point (3,8)(3, 8): x=8,y=3x' = 8, \quad y' = -3 So, the new coordinates after the rotation are (8,3)(8, -3).

Conclusion:

The coordinates after the rotation are (8,3)(8, -3), which matches option C.

Would you like further details or clarification?

Here are 5 related questions:

  1. What is the geometric interpretation of rotating a function?
  2. How does rotating by 180° affect the coordinates of a point?
  3. Can you explain the process of transforming other types of functions, like quadratic functions, under rotations?
  4. What happens to the shape of the graph after a 90° clockwise rotation?
  5. Can we generalize the rotation formula to any angle, not just 90°?

Tip: When dealing with rotations, it's helpful to visualize the process on a coordinate plane to ensure the transformation makes sense.

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Math Problem Analysis

Mathematical Concepts

Exponential Functions
Geometric Transformations
Rotation

Formulas

Exponential function: y = 2^x
Rotation formula (90° clockwise): (x', y') = (y, -x)

Theorems

Coordinate transformation rules for 90° rotation

Suitable Grade Level

Grades 10-12