- #1

- 19

- 0

Hey guys,

Can someone tell me why this integral isn't valid?

∫ v Δp = pv + C

Can someone tell me why this integral isn't valid?

∫ v Δp = pv + C

- Thread starter PhiPhenomenon
- Start date

- #1

- 19

- 0

Hey guys,

Can someone tell me why this integral isn't valid?

∫ v Δp = pv + C

Can someone tell me why this integral isn't valid?

∫ v Δp = pv + C

- #2

Mark44

Mentor

- 34,017

- 5,672

You're treating v as if it were a constant.Hey guys,

Can someone tell me why this integral isn't valid?

∫ v Δp = pv + C

This is valid:

$$ \int k~dx = kx + C$$

This is not:

$$ \int f(x)~dx = f(x) \cdot x + C$$

- #3

- 296

- 0

Basically, [itex]\displaystyle \int y\,dx = yx + C \text{ iff }\frac{dy}{dx} = 0[/itex].

- #4

Mark44

Mentor

- 34,017

- 5,672

Which is the same as saying y is a constant.Basically, [itex]\displaystyle \int y\,dx = yx + C \text{ iff }\frac{dy}{dx} = 0[/itex].

- #5

- 19

- 0

Ah I see. Thanks guys.

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