Question

What is the relative maximum and minimum of the function?
f(x) = 2x3 + x2 - 11
A. The relative maximum is at (–1.53, 8.3) and the relative minimum is at (1.2, –12.01).B. The relative maximum is at (–1.53, 12.01) and the relative minimum is at (1.2, –8.3).D. The relative maximum is at (–1.2, 12.01) and the relative minimum is at (1.53, –8.3).

Answer 1

@JakeV8

Answer 2

D is what i got am i right?

Answer 3

@zordoloom

Answer 4

one sec.

Answer 5

ok :)

Answer 6

Wind farms are a source of renewable energy found around the world. The power P (in kilowatts) generated by a wind turbine varies directly as the cube of the wind speed v (in meters per second). If a turbine generates 700kW in a 12 m/s wind, how much power does it generate in a 6 m/s wind?
A. 1050kW

B. 175kW

C. 175kW

D. 88kW
also this is my last question i picked b but i also notice two of the answers are the same lol so i guess its not b or c?

Answer 7

find the 1st derivative....

then solve for x

this will give the stationary points

Answer 8

what is a derivative

Answer 9

makes iit hard to find a relative maximum or minimum o=if you don't know

Answer 10

:( these are my last 2 questions though

Answer 11

well for today ill be back on here tomorrow lol

Answer 12

just curious, what class makes you find relative max/min if you don't know derivatives?

Answer 13

This sounds like precalc.

Answer 14

oh.... using a graphing calculator?

Answer 15

Because derivatives are introduced in calculus

Answer 16

you can't do relative max or mins of a cubic without calculus

Answer 17

well this is my second day of Alegbra 2 so.... i pretty much dont know any of this :( my mom usually does this for me but shes out of town :(

Answer 18

Perhaps it would be a good idea to learn this stuff.

Answer 19

well maybe time to hit the books... good luck

Answer 20

ive never taken calculus whatever that is

Answer 21

are you supposed to use a graphing calculator to solve this? (since you don't know calculus?)

Answer 22

Calculus is really simple. Its just a few steps after Algebra 2.

Answer 23

i dont have the info to get in the book thats why im on here

Answer 24

But honestly, don't you really come here for just answers? Just curious.

Answer 25

Wind farms are a source of renewable energy found around the world. The power P (in kilowatts) generated by a wind turbine varies directly as the cube of the wind speed v (in meters per second). If a turbine generates 700kW in a 12 m/s wind, how much power does it generate in a 6 m/s wind?
A. 1050kW

B. 175kW

C. 175kW

D. 88kW
also this is my last question i picked b but i also notice two of the answers are the same lol so i guess its not b or c? i believe its d am i correct

Answer 26

find some online notes or google books...

Answer 27

i come one here for explainations but a lot of people dont give me explainations just the answers

Answer 28

some of the people im a fan of try to explain certain things to me but its like talking to a rock

Answer 29

by the looks of the questions' choices, i'd say you'd have to use a graphing calculator to solve the first problem...

Answer 30

lol... well if you don't know calculus then I'd say without graphing your polynomial... you really can't solve the problem.... and you seem to post a lot of question.... so good luck with your studies

Answer 31

i have my calculator i judt dont know how to use it lol its my second day having this

Answer 32

what brand of calculator..?

Answer 33

TI-84

Answer 34

here are the official TI -84 instructions for your calculator, hope they help.

http://education.ti.com/guidebooks/graphing/84p/TI84PlusGuidebook_Part2_EN.pdf

Answer 35

here's a youtube vid on using the calulator to find rel max/min...
http://www.youtube.com/watch?v=-Ytczz1YFyc