1.

Find theintervals in which the following functions are strictly increasing ordecreasing:(a) x2+ 2x − 5 (b) 10 − 6x − 2x2(c) −2x3− 9x2 − 12x + 1 (d) 6 −9x − x2(e) (x+ 1)3 (x − 3)3

Answer»

Find the
intervals in which the following functions are strictly increasing or
decreasing:



(a) x2
+ 2x − 5 (b) 10 − 6x − 2x2



(c) −2x3
− 9x2 − 12x + 1 (d) 6 −
9xx2



(e) (x
+ 1)3 (x − 3)3



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