Question

) Find the domain of definition
a) f(x)=3x-1/√1-5x​

Answer 1

(-∞, 1/5)

Explanation:

`f\left( x\right) =(3x-1)/(√(1-5x) )`

f is defined ,if and only if ,

1 - 5x > 0

⇔ 1 > 5x

⇔ 1/5 > x

⇔ x < 1/5