Hints:[br]1. Triangle EFC is similar to triangle ABC[br]2. Area of Rect = (x) ( y)
Maxima and Minima
Class Activity 1 - Do Try 9 (i) on writing paper
Move Point D to change the length of x
Try 9 (i) cont'
Plot the function for the area of rectangle (Use [math]y=\frac{5}{12}x\left(12-x\right)[/math])
Try 9 (ii)
Calculate the value of x for which A has a stationary value. x=
Is this a max or minimum point ?
Class Activity 2 - Read Example 10 below
Class Activity 3 - Visualize the folding box based on above example
Class Activity 4 - Do Try 10 (i) on writing paper
Try 10 (i) cont'
Plot the function for the volume of the box. (Use y instead of V)
Try 10 (ii)
Calculate the value of x for which V has a stationary value. x=
Is this a Max or min point ?