如果两边同除以，数学家不会这么做，但是物理学家可以,得到dθ,等于。

dt If you divide both sides by dt, which mathematicians cannot do, but physicists can, then you get /dt=ds/dt d theta/dt equals ds/dt, and v/l that is the velocity divided by l.

youdao

I have 3 q1* is equal to a - c over b; and finally divide by 3 q1* is equal to a - c over 3b.

q1*= /b,最后两边同除以3得,q1*=/3b

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