(Solved): The differential equation dy/dx+y=0 has characteristic equation... need answers fir third part! At l ...

At least one of the answers above is NOT correct. (1 point) The same idea that works for second order constant coefficient equations would work for first order too. The differential equation \( \frac{d y}{d x}+y=0 \) has characteristic equation with the root \( =0 \) help (formulas) Therefore a solution is help (numbers) help (formulas) Note: It should be the one that has value of 1 af \( x=0 \) as usual. Use these to solve the initial value problem \[ \frac{d y}{d x}+y=0, \quad y(0)=3 \] \( y(x)= \) help (formulas)