# Derivatives and Vector Functions

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Find r '(t) for r (t) = < ( 4 + 5t), (t - t^2) >.

https://brainmass.com/math/derivatives/derivatives-vector-functions-121854

#### Solution Preview

As far as I understand you are given a two dimensional parametric vector and you need to calculate a vector tangential to the path - since the derivative is tangent to the path.

When we take a derivative of ...

#### Solution Summary

Derivatives and vector functions are investigated. The functions are solved with intervals.

$2.49