Question

Find the slope of the tangent line to the graph of f at the given point.

Answer 1

f(x) = x2 + 5x at (4, 36)

A. 13

B. 21

C. 9

Answer 2

To find the slope at that point, you first take the derivative and plug in your point

Answer 3

i dont know how too.

Answer 4

To take the derivative, you multiply the term by its exponent and subtract one from the exponent. So the derivative of 6x^3 for example would be 3(6x^2)=18x^2

Answer 5

so is the derivative is 4?

Answer 6

Show me your work. What do you get as the derivative before you plug in numbers?

Answer 7

i dont know because i dont know what to even do..

Answer 8

How do you not know?

Answer 9

because i never done this before.

Answer 10

you need calc 1 differentials aka derivitives for this.

Answer 11

well can you help me and show me how to solve this.

Answer 12

are you learning on your own from a book? If it is for school then they should have taught you.

Answer 13

Or is this extra credit?

Answer 14

The derivative of x^2, what is it? Just do as I said earlier.

Answer 15

answer me this Erin. Do you know what a derivative is?

Answer 16

i have a book but the examples do not makee sensse ..

Answer 17

Maybe defining what a derivative is will help your foundation.

Answer 18

I understand. so you are in calc 1 then?

Answer 19

im in pre calc and basically it means how a measure of how a function changes as it input changes

Answer 20

aaa i see. Have you went over the rules for derivatives yet? like the formulas or shurtcuts

Answer 21

http://www.allaboutcircuits.com/vol_5/chpt_6/6.html

Answer 22

nopeee .

Answer 23

okay so what one do i use

Answer 24

use rule 1 2 and 4

Answer 25

i dont understand how to use them or plot which numbers in