TRUE$/$FALSE$.$ Write $\text{'}$T$\text{'}$ if the statement is

$1)$ For the ideal op$-$amp of Figure $18-1,$ terminal $1$ is the non$-$inverting input pin.

For the ideal op$-$amp of Figure $18-1,$ terminal $2$ is the negative supply pin.

$3)$ For the ideal op$-$amp of Figure $18-1,$ if terminal $1$ is grounded a positive voltage on terminal $2$ will produce a negative output voltage.

$4)$ For the ideal op$-$amp of Figure $18-1,$ if $V_{in}$ is the voltage between terminals $1$ and $2$ the voltage on terminal $3$ will be $A_v{V}_{in}.$