Derivatives of Quardratics

[itsShayanProfile]

The red marked line, I don’t understand, why delta f = ?

[rmwkwok]

Hello @itsShayanProfile

Because:

.

Cheers,
Raymond

[itsShayanProfile]

Then why its square on it?

[itsShayanProfile]

Why it has square on it?

[itsShayanProfile]

Thank you so much. I looked into it again and uderstood. Thank you fo the clarification.

[paulinpaloalto]

@itsShayanProfile

Then why its square on it?

Because the function in question is f(x) = x^2.

[rmwkwok]

Great work, @itsShayanProfile!