13. Consider
f(x)=sqrt x-2
a) Using any of the three limit formulas to find f ′ ( a ), what is the slope of the tangent line to f ( x )at x = 18? (6 points execution, 2 points notation)
b) Find the equation of the tangent line at x = 18
14. State the derivative.
a) d/ d x [ x ^n ]
b) d /d x [ cos x ]
c) d /d x [ csc x ]
d) d/ d x [ cosh x ]
e) d/ d x [ ln x ]
f) d/ d x [ a x ]
g) d /d x [ sin ^− 1 x ]
h) d/dx [ tan^ − 1 x ]
15.Differentiate. Do not simplify.
f(x)=-4x^5+3/2x^3+x^⅔+10+7x^-2
16.Differentiate. Do not simplify.
g(x)=x^3secx
17. Differentiate. Do not simplify.
y=5sin (5x^2)+e^3x
18.Differentiate. Do not simplify.
k(x)= ln(tan x/3x)
19. Differentiate. Do not simplify.
n(t)=5t3^t cot t
20.Find the equation of the tangent line to the curve at the point ( 0 , 2 ).
g(x)=e^x+1/x+1
21.Use implicit differentiation to find the slope of the tangent line at
( π , π/ 2 ).
xsiny+2x-2y
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