19 questions
What is f'(1) if f(x) = -3x2-6x.
0
-6x - 6
6x
-12
Find the derivative of y = 5x4
At which point(s) will the f'(x)=0?
at C only
at points A, C and E only
at point B and D only
at points A and E only
Where on this graph would you find an instantaneous rate of change of 0?
x = -3
x = 0
x = 3
x is approximately -4.8 and x=0
None
For what values of x is dy/dx positive?
x < -0.5774
-0.5774 < x < 0.5774
x > 0.5774
-1 < x < 0
x < -0.5774 and x > 0.5774
Find the derivative of the funtion. (hint: you will need to multiply first!)
4x8+60x6+12x3
12x7+36x2
32x7+36x2
20x6
Find dy/dx for y = 4x3 + 3x + 1
dy/dx = 4x2 + 3
dy/dx = 4x2 + 3x
dy/dx = 12x2 + 3x
dy/dx = 12x2 + 3
If a is a constant, what is the derivative of ax?
a
x
1
0
At which point(s) will the f(x) which is positive?
B only
A and E only
B and D only
None of those listed
Jackrabbits are capable of reaching speeds up to 40 miles per hour. How fast is this in feet per second? (Round to the nearest whole number.)
5,280 feet = 1 mile
95 feet per second
59 feet per second
.45 feet per second
40 feet per second
Kai is going for a run! He does a warm up running 1.5 m/s for 400 seconds. He then runs for 30 minutes at 8 km/h.
What was his average rate of change in km/h?