Chapter 2 review

Find the derivative of  f(x) = (x⁶ + 4)⁵

• f '(x) = 5x⁵(x⁴ + 4)⁴
• f '(x) = 6x⁵(x⁶ + 4)⁴
• f '(x) = 30x⁵(x⁶ + 4)⁴
• f '(x) = 30x⁶(x⁶ + 4)

Find y' if y = tan(3x²+2).

• sec²(3x²+2)
• 6xsec²(3x²+2)
• 6xsec²x(3x²+2)
• sec²(6x)

Tags

CCSS.HSF.IF.A.2

Find the derivative of the function:
f(x) = (7/5) sin² 2x

• f '(x) = -(28 sin 2x cos 2x)/5
• f '(x) = (28 cos 2x)/5
• f '(x) = (28 sin 2x cos 2x)/5
• f '(x) = (7sin 2x cos 2x) /5

Find f'(x)
f(x) = cos²(3x)/(9x⁴-6)

• [-6(9x⁴-6)cos(3x)sin(3x) - 36x³cos²(3x)]/(9x⁴-6)²
• [-6(9x⁴-6)sin(3x) - 36x³cos²(3x)]/(9x⁴-6)²
• -6cos(3x)sin(3x)/36x³
• [-2(9x⁴-6)cos(3x)sin(3x) - 36x³cos²(3x)]/(9x⁴-6)²

Tags

CCSS.HSF.TF.C.9

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• (3x²-2)cos(x³-2x)

• -(3x²-2)cos(x³-2x)

• cos(2x²-2)

• sin(2x²-2)

Find dy/dx by Implicit Differentiation 
x³ +y³  = 36

• 6 -x
• 3x² +3y² 
• −x²/y²
• 0

Find dy/dx
xy+y²=2

• -y/(x+2y)
• y/(x+2y)
• -3y/x
• -3x/y

Find dy/dx at a given point.

• 5/4
• 4/5
• 1
• -5

Rachel is standing atop a 13 ft ladder. The ladder is leaning against a vertical wall. The ladder starts sliding away from the wall at a rate of 3 ft/sec. How fast is the ladder sliding down the wall when the tip of the ladder is 5 ft high?

• 3 ft/sec
• -7.2 ft/sec
• 7.2 ft/sec
• 12

Tags

CCSS.8.G.B.8

Chris is sitting on the edge of a dock tossing rocks into the water. As each rock hits the water, small circles appear traveling outward from the point of impact. The radius of the circle is changing at a rate of 5 in/sec.  How fast is the area changing when the circumference is 4 in? 

• 40 in/sec
• 20 in/sec
• 20pi in/sec
• 40pi in/sec

Tags

CCSS.HSG.GMD.A.1