Find the zeros of each function and give the multiplicity of each zero. State whether the graph crosses the x-axis or touches the x-axis and turns around at each zero. Show your results on the graph. f(x)= (x+1)(2x–3) g(x) =x*(x+1)(x-1)

Advanced Engineering Mathematics
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Chapter2: Second-order Linear Odes
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**Multiplicity** – If the factor \( x - c \) occurs \( k \) times in the complete factorization of the polynomial \( P(x) \), then \( c \) is called a root of \( P(x) = 0 \) with **multiplicity** \( k \). If \( c \) is a zero of even multiplicity, then the graph **touches** the x-axis and turns around at \( c \). If \( c \) is a zero of odd multiplicity, then the graph **crosses** the x-axis at \( c \).

Find the zeros of each function and give the multiplicity of each zero. State whether the graph crosses the x-axis or touches the x-axis and turns around at each zero. Show your results on the graph.

$$ f(x) = (x+1)(2x-3)^2 $$

$$ g(x) = x^2(x+1)(x-1)^3 $$

### Graph Explanation

- **Graph for \( f(x) = (x+1)(2x-3)^2 \)**: 

  - The zero at \( x = -1 \) has a multiplicity of 1, so the graph will cross the x-axis at \( x = -1 \).
  - The zero at \( x = \frac{3}{2} \) has a multiplicity of 2, so the graph will touch and turn around at the x-axis at \( x = \frac{3}{2} \).

- **Graph for \( g(x) = x^2(x+1)(x-1)^3 \)**:

  - The zero at \( x = 0 \) has a multiplicity of 2, so the graph will touch and turn around at the x-axis at \( x = 0 \).
  - The zero at \( x = -1 \) has a multiplicity of 1, so the graph will cross the x-axis at \( x = -1 \).
  - The zero at \( x = 1 \) has a multiplicity of 3, so the graph will cross the x-axis at \( x = 1 \).
Transcribed Image Text:**Multiplicity** – If the factor \( x - c \) occurs \( k \) times in the complete factorization of the polynomial \( P(x) \), then \( c \) is called a root of \( P(x) = 0 \) with **multiplicity** \( k \). If \( c \) is a zero of even multiplicity, then the graph **touches** the x-axis and turns around at \( c \). If \( c \) is a zero of odd multiplicity, then the graph **crosses** the x-axis at \( c \). Find the zeros of each function and give the multiplicity of each zero. State whether the graph crosses the x-axis or touches the x-axis and turns around at each zero. Show your results on the graph. $$ f(x) = (x+1)(2x-3)^2 $$ $$ g(x) = x^2(x+1)(x-1)^3 $$ ### Graph Explanation - **Graph for \( f(x) = (x+1)(2x-3)^2 \)**: - The zero at \( x = -1 \) has a multiplicity of 1, so the graph will cross the x-axis at \( x = -1 \). - The zero at \( x = \frac{3}{2} \) has a multiplicity of 2, so the graph will touch and turn around at the x-axis at \( x = \frac{3}{2} \). - **Graph for \( g(x) = x^2(x+1)(x-1)^3 \)**: - The zero at \( x = 0 \) has a multiplicity of 2, so the graph will touch and turn around at the x-axis at \( x = 0 \). - The zero at \( x = -1 \) has a multiplicity of 1, so the graph will cross the x-axis at \( x = -1 \). - The zero at \( x = 1 \) has a multiplicity of 3, so the graph will cross the x-axis at \( x = 1 \).
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