The directional derivative of a function F(x, y) at a point P (1,-3) in the direction of the unit vector - i + j is equal to - 4 while its directional derivative at P in the direction of the unit vector i + j is equal to 0. Find the directional derivative of F(x, y ) at P in the direction from P(1,-3) towards the point Q(5,0).

answer: it is 1: 47 pm

for the free

< < < emily> > >

the area of a triangle is determined by the formula: base x height * 1/2

you'll need to assign a base to the triangle. based on the vertices given, the simplest base would be the line segment from (-2,1) to (2,1). the distance between any two numbers is found by just subtracting them. here, you should subtract the x values to find the distance of this side.

2 - (-2) = 4.

so the distance (aka the length of the base) is 4. the height of the triangle is the distance between the base and the highest point on the triangle which is (3,4). we should subtract the y values this time to find the height/distance.

4 - 1 = 3

so the height is 3.

base = 4

height = 3

hope this if needed hmu