Fa=1/(2*3.142*Rf*Cf). Where Rf is resistance in parallel with Cf
Fb =1/(2*3.132*R1*Cf) Where R1 is the resistance connected to input terminals of op amp
Av (Gain) = 20 log (Vo/Vin) dB
1st Input is Sine wave thus output for it is inverted Cosine wave
2nd input is Square wave thus output for it is Triangular wave
3rd input is Triangular wave thus output for it is inverted Triangular wave