Warner Hall
03/19/2024 · Junior High School
En las siguientes funciones cuadráticas: a) \( f(x)=-x^{2}+4 \) b) \( f(x)=x^{2}+x+1 \) c) \( f(x)=(x+4)^{2} \) d) \( f(x)=\frac{1}{2} x^{2}+2 x-6 \) Determina el vértice, máximo o mínimo, intersecciones con los ejes y esboza la parábola correspondiente señalando los elementos anteriores.
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### a) \( f(x) = -x^{2} + 4 \)
1. **Vértice**: \( (0, 4) \)
2. **Máximo**: \( (0, 4) \)
3. **Intersecciones**: \( (0, 4), (2, 0), (-2, 0) \)
### b) \( f(x) = x^{2} + x + 1 \)
1. **Vértice**: \( \left(-\frac{1}{2}, \frac{3}{4}\right) \)
2. **Mínimo**: \( \left(-\frac{1}{2}, \frac{3}{4}\right) \)
3. **Intersecciones**: \( (0, 1) \) (sin intersecciones con el eje x)
### c) \( f(x) = (x+4)^{2} \)
1. **Vértice**: \( (-4, 0) \)
2. **Mínimo**: \( (-4, 0) \)
3. **Intersecciones**: \( (0, 16), (-4, 0) \)
### d) \( f(x) = \frac{1}{2} x^{2} + 2x - 6 \)
1. **Vértice**: \( (-2, -8) \)
2. **Mínimo**: \( (-2, -8) \)
3. **Intersecciones**: \( (0, -6), (2, 0), (-6, 0) \)
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