Let f(x)=2x−1. If 3f(a)=15, what is the value of f(2a)?
1 answer:
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Answer:
Step-by-step explanation:
Forma ordinaria
La ecuación de la parabola de manera ordinaria está dada por:
(1)
Donde:
- (h,k) es la coordenda del vértice, en nuestro caso (0,0) ya que está en el origen.
- (h,k+p) es la coordenda del foco, en nuestro caso (0,1).
Por lo tanto h = 0, k = 0 y p = 1.
Remplazando estos valores en la ecuación de la parábola, tenemos:
(2)
Forma general
La forma general de una parábola esta dada por la siquiente ecuación
Reordenando la ecuación (2) tenemos:
Espero esto te haya ayudado!
Answer:
52
Step-by-step explanation:
(I replaced
with
since we are to find
.)
(By the order of operations, we take care of the exponents before whatever else we have here.)
(By the order of operations, we take care of the multiplication as we see if left to right.)
(By the order of operations, we perform addition/subtraction as we see it left to right.)
(This completes the simplification.)
We could have also put this in our calculator as:
4(4)^2 - 2(4) - 4
This would have returned 52.