D = 1/F
F = 1/D=1/2,5= 0.4
г=f/d=2
f=2d
1/F = 1/d + 1/f
1/F = 1/d + 1/2d
1/F = 3/2d
d = 3F/2
d = 3 * 0,4 / 2 = 0, 6
Объяснение:
D = 1/F
F = 1/D=1/2,5= 0.4
г=f/d=2
f=2d
1/F = 1/d + 1/f
1/F = 1/d + 1/2d
1/F = 3/2d
d = 3F/2
d = 3 * 0,4 / 2 = 0, 6
Объяснение: