Dorsa R.

asked • 05/29/20

how can we rewrite this :

(dx/dt)/x=(dy/dt)/-y rewrite = d(lnx)/dt=-d(lny)/dt

how can we change the equation ?

1 Expert Answer

By:

Dorsa R.

so what will happen to dt ?
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05/29/20

Dorsa R.

and how can it be like this d(lnx)/dt=-d(lny)/dt
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05/29/20

Charles B.

tutor
that rewrite is because the derivative of ln(x) is (1/x)dx, so instead of writing (1/x)(dx/dt), one can write d(lnx(x))/dt, because dx signifies deriving the x, and we are replacing the x with the antiderivative of what was previously being derived.
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05/29/20

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