Sunday

November 23, 2014

November 23, 2014

Posted by **Anonymous** on Sunday, February 27, 2011 at 11:25pm.

Thank you!

- Directional derivative -
**agrin04**, Monday, February 28, 2011 at 2:14amdf(x,y)/dx = 2x

df(1,2)/dx = 2

df(x,y)/dy = -2y

df(1,2)/dy = -4

Directional derivative =

= <2,-4> • <(3/5),-(4/5)>

= (6/5) + (16/5)

= 22/5

**Answer this Question**

**Related Questions**

Calc - The directional derivative of z = f(x,y) at (2,1) in the direction toward...

CALCULUS - Find the gradient and directional derivative of f at P in the ...

cal3 - Consider the function f(x,y)=xy+xz+yz+4 at point p=(2,-1,1) a)find the ...

Environmental Science - I have to determine which kind of natural selection is ...

math - Let f be a real value function and x Î Df then 0 lim ( ) ( ) h f x h f x...

Calc - a) y =ln(x-1) find dy/dx=? b) y=3 ln x - ln (1/x) where x >0, dy/dx...

calculus - Find the derivative of the function using the definition of ...

Statistics - Discuss how a t Test can be employed in hypothesis testing by the ...

physics - The three displacement vectors in the drawing have magnitudes of A = 5...

Calculus - Use a symbolic differentiation utility to find the derivative of the ...