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Calculus
Practice Quiz 196

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Find dy/dx @ x = 1.

1.  y = -7x + 5
  1
-7
-1		 2.  y = x3 + 5
1
8
3
3.  y = x
1
-1
0		 4.  y = x/3 + 5
1
0
1/3
5. y = 20 - 22x + 6x2
 -32
32
-10		 6.  y = (5 + 3x2)3      
1
4096
1152
7.  y = (5 + 3x)(4 - 2x)
10
-10
1		 8.  y = (2x + 1) / (x - 7)
 -3/4
-5/12
-1/4
9.  For y = 1 / x  , find the equation of the
line tangent @ x = 3.
y - 1/3 = -1/9(x - 3)
y - 3 = 1/3(x + 3)
y = -1/3x + 3

10. Verify the derivative of y = 5x2 + 3x + 1 is 10x + 3 using the formal definition of derivative.(let h = delta x)
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