F'(x) = 6x^2 - 18x + 12
= 6(x^2 - 3x + 2)
= 6(x - 2)(x - 1) = 0 at turning points
at turning points x = 1 and x = 2
f''(x) = 12x - 18
so when x = 1 f''(x) <0 (maximum) and when x = 2 f''(x) > 0 (minimum)
Answer:
top left is "same" top right is "parallel"
Answer:
Step-by-step explanation:
short explanation: 1) to add the 1st equation to the 2d; 2) to calculate the value of 'x', then to substitute x=13/5 into the 2d equation and calculate the value of 'y'.
Answer:
of an hour = 1 1/5 hour = 72 minutes
Step-by-step explanation: