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- If a functionfis increasing on (a,b) and decreasing on (b,c) , then what can be said about the local extremum offon (a,c) ?Prove that if the function f : I → R has a bounded derivative on I, then f isuniformly continuous on I. Is the converse true? Justify.Consider the function f defined on [0,∞), f(x)=(x^r)sin(1/x), for x≠0 and f(x)= 0, where r>0. Determine the range of r in which a) f is continuous on [0,∞), b) f is differentiable on [0,∞), c) f' exits and is differentiable on [0,∞).
- Let z= x+iy and determine where the function f(z) = Log(z2 + 1) is holomorphic. What is its derivative in the region where it is holomorphic?Suppose that a nonnegativefunction y = ƒ(x) has a continuous first derivative on [a, b] . LetC be the boundary of the region in the xy-plane that is bounded below by the x-axis, above by the graph of ƒ, and on the sides by the lines x = a and x = b. Show that ∫ƒ(x) dx = - ∮C y dx.consider the function f defined on [0,∞),f(x)=(x^r)sin(1/x),for x≠0 and f(x)=0 and for x=0, where r >0. determine the range of r in which (a) f is continuous on (0,∞), (b) f is differentiable on [0,∞) (c) f' exists and is differentable on [0,∞).
- Let f(t) = et^2 be an integrable function defined on the closed interval [-x, x] on ℝ. If F is the anti-derivative of f on [-x, x], prove that F'(x) = f(x) for all x in [-x, x].Consider the function f defined on [0,∞] f(x) = { xr sin(1/x), x≠0, 0, x=0} where r > 0. Determine the range of r in which a) f is continuous on [0,∞] b) f is differentiable on [0,∞) c) f' exists and is differentiable on [0, ∞)Assume the second derivatives of ƒ are continuous throughout the xy-plane and ƒx(0, 0) = ƒy(0, 0) = 0. Use the given information and the Second Derivative Test to determine whether ƒ has a local minimum, a local maximum, or a saddle point at (0, 0), or state that the test is inconclusive. ƒxx(0, 0) = -9, ƒyy(0, 0) = -4, and ƒxy(0, 0) = -6