Question

How to find the domain of f(x)= sqrt(3+4x)

Answer 1

under radical must be greater than or equal to zero

Answer 2

sqrt(y) will take real values,only when y>0
so 3+4x>0.what u get??that would be your domain...

Answer 3

for domain solve for x such that 3+4x greater than or equal to 0.
other wise f becomes imaginary..
hence x >=-3/4 and x is a real number...

Answer 4

oh right, thanks guys. Just forgot.