(20pts) Use the idea op-amplifiers below, if we want v=2v, +v₂-v, -3v (a) Choose the values of the resistances: R1, R2, R3 and R, with given conditions: R, R₁ = R₁ = 10(k- Ohms); (b) V₁ =sin(100)+sin(200m)(mv) v, 2sin(100) + sin(200m)(mv) = v, 4 sin(100)+sin(250m)(mv) v=sin(100)+sin(200)(mv), v. =? Ra=10k ww 1. R₁ ww R₂ ww Re =10K www R= lok www R3 30- www RA