The S&Pindex for a co. in recent years is (2007:SPIn(80))(2008:SPIn(40))(2009:SPIn(20))(2010:SPIn(30)). The index is approximated by the function f(x) = 13x^2 - 82x + 150, where x stands for years since 2006. QUESTION: Find f' (x) using the derinition of the derivative.; Evaluate the derivative at x=1 and interpret the result; find the rate of change of the index in 2010... any qestions, PLEASE MESSAGE ME or text me, 717-385-0641
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Def of derivative.
`` We have given function
f(x) = 13x^2 - 82x + 150,
Thus rate of change at x=1
Index function is a decreasing function at x=1.
Index in 2010 is
rate of change in 2010
rate of change in 2010 is positive ,index is now an increasing function.
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