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R i a + L d i a d t

R i a + L d i a d t

R i a + L d i a d t

i a < 0 i b < 0

S b S c 3 U d c u a

2 S b S c 3 U d c u b

S b + 2 S c 3 U d c u c

i a < 0 i b > 0

S b 1 3 U d c u a

2 S b 1 3 U d c u b

S b + 2 3 U d c u c

i a > 0 i b < 0

2 S a S b S c 3 U d c u a

S a + 2 S b S c 3 U d c u b

S a S b + 2 S c 3 U d c u c

i a > 0 i b > 0

2 S a S b 1 3 U d c u a

S a + 2 S b 1 3 U d c u b

S a S b + 2 3 U d c u c