# Answer to Question #17231 in Calculus for hsd

Question #17231
Which of the following statements are true (T) and which are false (F)? Justify if true and give a counter-example if false. Suppose that f(x) has domain [1; 3] and is continuous, that g(x) has domain R and is di erentiable, and that h(x) has domain (1; 3) and is differentiable. (a) There is some a E R with 1 &lt;= a &lt;= 3 such that f has a global maximum at a. (b) There is some a E R with 1 &lt; a &lt; 3 such that f has a global maximum at a. (c) There is some a E R with 1 &lt; a &lt; 3 such that f has a local minimum at a. (d) f cannot have in finitely many different local maximum points. (e) There is some a E R such that g has a global maximum at a. (f) g has at least one local extremum. (g) If h has a local maximum at a 2 (1; 3), then h&#039;(a) = 0. (h) If h&#039;(a) = 0 for some a E (1; 3), then h has a local maximum or a local minimum at a.
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