1. What is the domain of f(x) = √(1 - x2) and where is f continuous?
2. State whether the indicated function is continuous at 4.
3. Suppose f(x) is defined as shown below.
a. Use the continuity checklist to show that f is not continuous at 0.
b. Is f continuous from the left or right at 0?
c. State the interval(s) of continuity.
4. Determine the interval(s) on which the following function is continuous. Be sure to consider right- and left-continuity at the endpoints.
f(x) = √(3x2 - 24)
5. Evaluate the following limit.
limx→3π/2(sin2x + 5 sinx + 4/sin x + 1)
6. Use the Intermediate Value Theorem to verify that the following equation has three solution on the interval (0, 1). Use a graphing utility to find the approximate roots.
140x3 - 139x2 + 38x - 3 = 0
7. Check whether the function f(x) = (x2 - 11x + 28/x - 5) has a removable discontinuity at the point a = 5.
8. Suppose x lies in the interval (4, 6) with x ≠ 5. Find the smallest positive value of δ such that the inequality 0 < |x - 5|< δ is true for all possible values of x.
9. For the function f(x) = 4x + 7, P(-3, -5):
a. Use the definition mtan = limx→a(f(x) - f(a)/x - a) to find the slope of the line tangent to the graph of f at P.
b. Determine an equation of the tangent line at P.
c. Plot the graph off and the tangent line P.
10. For the function f (x) = 7x + 4, P (0, 4):
a. Use the definition mtan = limh→0(f(a+h) - f(a)/h) to find the slope of the line tangent to the graph of f at P.
b. Determine an equation of the tangent line at P.
11. Let f (x) = (1 / 4+3x) and point p = (1, 1/7).
a. Use the following definitions of the slope of the tangent line at x = a to find the slope of the line tangent to the graph of f at P.
mtan = limh→0(f(a+h) - f(a) / h)
b. Determine an equation of the tangent line at P.
12. For the function and point f(x) = 2/√x, a = 1/9
a. Find f'(a).
b. Determine an equation of the line tangent to the graph of f at (a, f(a)) for the given value of a.
13. Use the graph of g in the figure to do the following.
a. Find the values of x in (-1, 7) at which g is not continuous.
b. Find the values of x in (-1, 7) at which g is not differentiable.
c. Sketch a graph of g'.
14. Find the derivative of the following function.
g(t) = 12√t
15. Find the derivative of the following function.
f(x) = 9x3 + 4x
16. Find the derivative of the following function.
f(x) = 14x3 - 25x + ¼
17. Find the derivative of the following function by first expanding the expression.
f(x) = (6x + 5)(5x2 + 7)