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If the equation x^(2)-x+ m^(2) = 0 has n...

If the equation `x^(2)-x+ m^(2) = 0` has no real roots then m can satisfy

A

m=0

B

`m lt (-1)/(2)`

C

`m lt (1)/(2)`

D

`m in R`

Text Solution

AI Generated Solution

The correct Answer is:
To determine the values of \( m \) for which the equation \( x^2 - x + m^2 = 0 \) has no real roots, we will analyze the discriminant of the quadratic equation. ### Step-by-Step Solution: 1. **Identify the coefficients**: The given quadratic equation is in the form \( ax^2 + bx + c = 0 \). Here, \( a = 1 \), \( b = -1 \), and \( c = m^2 \). 2. **Write the discriminant**: The discriminant \( D \) of a quadratic equation \( ax^2 + bx + c = 0 \) is given by: \[ D = b^2 - 4ac \] Substituting the values of \( a \), \( b \), and \( c \): \[ D = (-1)^2 - 4 \cdot 1 \cdot m^2 = 1 - 4m^2 \] 3. **Set the condition for no real roots**: For the quadratic equation to have no real roots, the discriminant must be less than zero: \[ D < 0 \implies 1 - 4m^2 < 0 \] 4. **Solve the inequality**: Rearranging the inequality: \[ 1 < 4m^2 \] Dividing both sides by 4: \[ \frac{1}{4} < m^2 \] 5. **Taking the square root**: Taking the square root of both sides gives: \[ |m| > \frac{1}{2} \] This implies: \[ m < -\frac{1}{2} \quad \text{or} \quad m > \frac{1}{2} \] 6. **Conclusion**: Therefore, the values of \( m \) for which the equation \( x^2 - x + m^2 = 0 \) has no real roots are: \[ m < -\frac{1}{2} \quad \text{or} \quad m > \frac{1}{2} \] ### Final Answer: The correct option is \( m < -\frac{1}{2} \) or \( m > \frac{1}{2} \).
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