7. the number of camera phones shipped globally can be modeled by the function y = 1.28e^1.31x where x is…
7. the number of camera phones shipped globally can be modeled by the function y = 1.28e^1.31x where x is the number of years since 1997 and y is the number of camera phones shipped (in millions). how many camera phones were shipped in 2002?
Answer
Explanation:
Step1: Calcular el valor de x
El año es 2002 y se mide a partir de 1997. Entonces $x = 2002 - 1997=5$.
Step2: Sustituir x en la función
Tenemos la función $y = 1.28e^{1.31x}$. Sustituyendo $x = 5$ obtenemos $y = 1.28e^{1.31\times5}$. Calculamos $1.31\times5 = 6.55$. Entonces $y = 1.28e^{6.55}$. Sabemos que $e^{6.55}\approx693.49$. Entonces $y = 1.28\times693.49$. $y=1.28\times693.49 = 887.6672$.
Answer:
887.67 millones (redondeado a dos decimales)