. The audio pan pot circuit of Fig. is used to continuously vary the position of

. The audio pan pot circuit of Fig. is used to continuously vary the position of signal Vi between the left and the right stereo channels. Determine the relation between R1 and R2 so that ? ???? ???? = -1 when the wiper is fully down, ? ???? ???? = -1 when the wiper is fully up, and ? ???? ???? = ? ???? ???? = 1 2 when the wiper is halfway

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