Question

X	-5	-3	-1	1	3	5	15

f(x)=15:x

Answer 1

Thay \(x=-5\Rightarrow f\left(-5\right)=\frac{15}{-5}=-3\)

Thay \(x=-3\Rightarrow f\left(-3\right)=\frac{15}{-3}=-5\)

Thay \(x=-1\Rightarrow f\left(-1\right)=\frac{15}{-1}=-15\)

Thay \(x=1\Rightarrow f\left(1\right)=\frac{15}{1}=15\)

Thay \(x=3\Rightarrow f\left(3\right)=\frac{15}{3}=5\)

Thay \(x=5\Rightarrow f\left(5\right)=\frac{15}{5}=3\)

Thay \(x=15\Rightarrow f\left(15\right)=\frac{15}{15}=1\)

Vậy:

x	-5	-3	-1	1	3	5	15
f(x)	-3	-5	-15	15	5	3	1

Answer 2

dễ thế mà