Question

Is $\sqrt{x}=4$ linear equation? If not then how the equation can be made linear.

• A. Yes
• B. No, substitute x=u², now the equation is linear in variable x
• C. No, substitute x=u², now the equation is linear in variable u
• D. None of these

Answer 1

The correct option is C

No, substitute x=u², now the equation is linear in variable u

The given equations is not linear. If we substitute $x=u^2$ Now the equation is $u=4$ which is linear equation.