Concept explainers
Explain why or why not Determine whether the following statements are true and give an explanation or counterexample.
a. For a function f of a single variable, if f′(x) = 0 for all x in the domain, then f is a constant function. If ▿ ·F = 0 for all points in the domain, then F is constant.
b. If ▿ × F = 0, then F is constant.
c. A vector field consisting of parallel
d. A vector field consisting of parallel vectors has zero divergence.
e. curl F is orthogonal to F.
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