Jichu

Most popular questions and responses by Jichu
  1. Maximum value

    Consider the function with rule f(x) = |x^2-ax|, where a is a positive constant. Find the maximum value of the function in the interval [0,a] How do you do find that?

    asked on December 28, 2016
  2. Finding Range - Maths

    Let f:{x: IxI > 100} => R, f(x) = 1/x^2. State the range of f. Let f:{x: IxI < 0.1} => R, f(x) = 1/x^2. State the range of f. *R = real numbers How do you find the two ranges? I know it sounds embarrassing but I am struggling to work out the range. Can you

    asked on December 28, 2016
  3. Maths - Cartesian Equations

    Find the corresponding Cartesian equation for each pair of parametric equations: x = t - (1/t) and y = 2*[t + (1/t)] The answer is y^2/16 - x^2/4 = 1 I have no idea where to begin. I tried squaring both equations in hope to easily remove t^2 but ended up

    asked on December 27, 2016
  4. Maths - Parametric Equations

    A circle is defined by the parametric equations x = 2cos(2t) and y = 2sin(2t) for t is all real numbers. (a) Find the coordinates of the point P on the circle when t = (4*pi)/3. (b) Find the equation of the tangent to the circle at P. Can you please show

    asked on December 27, 2016
  1. math

    4.09

    posted on December 28, 2016
  2. Concentration of Hydrofluoric Acid

    Not entirely sure what you mean but u can determine the concentration if u know the moles and volume. Concentration = moles/volume

    posted on December 28, 2016
  3. SAT Math

    72 students passed so 72/0.8 = 90 90/150 can be simplified to 3/5 Check my thinking

    posted on December 28, 2016
  4. Math

    10 million = 10,000,000

    posted on December 28, 2016
  5. Math

    41/24

    posted on December 28, 2016
  6. Maths

    Area of bathroom floor = 5^2 = 25m^2 Area of bathroom tile = (0.15)^2 25/(0.15)^2 = approx 1111 tiles

    posted on December 28, 2016
  7. English

    First of all, I personally will not write it for you because you need to learn to write by yourself. I can guarantee most of the tutors here will not write it for you either. Hint: Plan your story by creating a plot. Make sure it has a climax to be

    posted on December 28, 2016
  8. Math

    Let x = distance Hint: Draw a diagram. You should realise it's Pythagoras theorem x^2 = 7^2 + 24^2 x^2 = 625 x = 25 Answer: 25m SE

    posted on December 28, 2016
  9. Math

    Let x = one number and y = second number Hint: Equation #1: x+y=30 Equation #2: x^2 - y^2 = 180 x = 30-y (30-y)^2-y^2=180 y^2-60y+900-y^2=180 -60y=-720 y=12 x = 30-12 x=18

    posted on December 28, 2016
  10. value

    Hierarchy (if that is what you mean...) A system or organization in which people or groups are ranked one above the other according to status or authority. [Google]

    posted on December 27, 2016