User:AKlapper (WMF)/Sandbox

T230623
something something something something something something something something something something something k(x) = −(γ + ∇f)

T36710
Let's remove a space in the next edit. Let's remove a space in the next edit.Let's removea space in the next edit.Let's remove a space in the next edit.Let's remove a space in the next edit.Let's remove a space in the next edit.Let's remove a space in the next edit.Let's remove a space in the next edit.Let's remove a space in the next edit.Let's remove a space in the next edit.Let's remove a space  in the next edit.

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T238271
undo this

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$$\ddot{a}$$

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