The configuration and the gain of the above circuit is ________ and _____.
1
inverting, \( - \frac{{{R_2}}}{{{R_1}}}\)
2
inverting, \(1 + \frac{{{R_2}}}{{{R_1}}}\)
3
non inverting, \(- \left( {1 + \frac{{{R_2}}}{{{R_1}}}} \right)\)
4
non-inverting, \(- \frac{{{R_2}}}{{{R_1}}}\)