(medal given) For each function find the natural domain
a.f(x)=6x^2-x-2
b.f(x)=square root x-3
c.f(x)=1/square root x-3
d.f(x)=1/x +1

Question

(medal given) For each function find the natural domain
a.f(x)=6x^2-x-2
b.f(x)=square root x-3
c.f(x)=1/square root x-3
d.f(x)=1/x +1

anonymous · Answer

wanna know how to solve it or he answers?

anonymous · Answer

solve it

anonymous · Answer

A)     $$-\infty,\infty$$

anonymous · Answer

Those will be in parentheses like (-infinty, infinty)

anonymous · Answer

@hartnn

anonymous · Answer

B. (3, ∞)

anonymous · Answer

C.) same as B
D) (-∞, 1) (1,∞)

anonymous · Answer

Ignore B It would be [3, ∞) for both B and C, the type of parentheses used is important

anonymous · Answer

$$for B ,\it is [3,\infty) .for C \it is \left( 3, \infty\right) $$

anonymous · Answer

$$for D ,\left( -\infty,-1 \right)\cup \left( -1,\infty \right) $$
or all real numbers except -1

anonymous · Answer

@surjithayer is right about those

anonymous · Answer

1.denominator should not be zero.
2.terms under radical sign should be >=0