Sea a un numero real positivo, dada la funcion definida en los reales positivos distintos de a f(x) = √x − √a / x2 − a2 , ¿que valor debe tener a para que lımx→a f(x) = 1/4?

Derricks dog sitting and darlene's dog sitting are competing for new business. the companies ran the ads shown.which dog sitting service is more economic to use if you need 5 hours of service? explain.

Which representation has a constant of variation of -2.5

Identify the number 127 as a rational or irrational. explain