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## Homework Statement

Calculate the directional derivative, direction, and rate of maximum increase in the direction of v at the given point.

f(x,y) = x^2 + y^3

v = <4,3>

P = (1,2)

## Homework Equations

I know how to calculate directional derivative but I don't know how to calculate

**rate of maximum increase**and

**direction**

## The Attempt at a Solution

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