posted by .

Find the max or min value for y given the restictions on x.
y= x^3 -x^2 -6x

a) 0<x<3 min

b) -2<x<0 max

  • algebra -

    what is tttt?

  • algebra -

    y = x^3 - x^2 - 6x = 0(x+2)(x-3)
    y' = 3x^2 - 2x - 6

    y' = 0 at approximately 1.7, -1.1 (1 +- sqrt(19))/3.

    Knowing what we do about the shape of cubics, we can say that a local max is at x=-1.1, and a local min is at x=1.7

    Note how the given intervals correspond to exactly one "hump" of the graph, so the local min/max is the min/max for that interval.

  • algebra -

    I don't understand the y' stuff. I'm only in algebra. Is there another way?

  • algebra 1 -

    how do u convert 63 yards into ft

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math- Double check

    Please double check me Find the median of the following set of numbers. 47, 20, 52, 35, 58, 57 A) 49 1/2 B) 47 C) 48 1/2 D) 52 Answer: c Which of the following numbers are integers?
  2. MAth

    If 1 gallon (gal) of water weighs 8.34 pounds (lb), how much does 3.75 gal weigh?
  3. PreCalc

    y =( (C-A)/2 ) sin( (X - (A - ( (C - A)/2 ) ) )( pi/(C-A) ) ) + (B - ( (B-D)/2 ) How do I rearange this for this equation for the all of the variables including A, B, C, D, X were pi is the greek leter pi if you didn't notice this …
  4. Math

    For each of the following quadratics, determine if the equation has a max or a min, determine the value of the max or min, the direction of opening and the vertex. y = -2(x + 3)2 – 4 y = 4(x – 3)2 + 7 y = -x2 y = -½(x + 6)2
  5. C programming

    Question: Write a program that reads integers from the keyboard until the user enters the sentinel value -999. The program should then print the minimum integer read, the maximum integer read and the average of all the integers. (Excluding …
  6. Calculus

    Find any absolute max/min and local max/min for the function f(x)=x^3-4x+5 on the interval [0,5). Made sure to prove that these points are max/min values. This is what I did so far. f'(x)=3x^2-4=0 3x^2=4 x= 2/sqrt3 The -2/sqrt3 is …
  7. math

    how to solve this problem: max min(x-y)..... here where the max have written, under it x>=0 is also given. also under min y>=0 is given. Also tell that is this is equals to min max(x-y) ?
  8. Math

    Find the critical points and the interval on which the given function is increasing or decreasing, and apply the First Derivative Test to each critical point f(x)= (7/4)x^4+(28/3)x^3+(-63/2)x^2-252x critical points in increasing order: …
  9. Algebra

    What are the minimum, first quartile, median, third quartile, & maximum of the data set?
  10. Algebra 2

    Please help super confused!!! Which points are the best approximation of the relative maximum and minimum of the function?

More Similar Questions