Question

the diagram shows the curve with equation y=x^1/2 -4 + 3x^-1/2. Find the coordinates of A and B

Answer 1

Would you like a graph so you can find them :)?

Answer 2

?

Answer 3

Been told I need to use differentiation to find out the answer, I can add a drawing of the graph?

Answer 4

well i graphed it not with points.

Answer 5

Basically this is my Question

Answer 6

And you want the coordinates of those?

Answer 7

Please :)

Answer 8

Well my graph would be better to use. Why dont you graph where a and b would be and i will give you the points.

Answer 9

You can open my image in paint ETC. and paint the points ^-^

Answer 10

as if you right click the image you can do Save image as>Whatyounameit>Open in paint>Draw tool on the areas that are A and B

Answer 11

As helpful as that would be, I've got to use dy/dx etc to find the coordinates

Answer 12

Out of pure curiosity, are you American? The methodology used to answer these questions may be different?

Answer 13

Why yes i am.

Answer 14

Not saying that to insult at all :) Just wanted to know, obviously our specifications for exams may be a little different XD

Answer 15

Grade level?

Answer 16

AS, think thats similar to your Grade 11?

Answer 17

Actually i have very high intelligence but i am in 9th i help with what i can which i can always look up how to differentiate

Answer 18

Cool, so have you done differentiation at all?

Answer 19

I don't believe i have

Answer 20

Here how about since i have 0 experience with that. Why dont you contact your teacher, and ask for help.

Answer 21

I graphed it out and i am not sure what more i can do. Unless you were to draw points on it xD

Answer 22

Basically, take y = x^7 - x^4 + 5x^3. By differentiating (dy/dx) you would get dy/dx = 7x^6 - 4x^3 + 15x^2