靈活運(yùn)用導(dǎo)數(shù)法，高效解答函數(shù)問(wèn)題

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導(dǎo)數(shù)法在解答函數(shù)問(wèn)題中應(yīng)用廣泛，常用于判斷函數(shù)的單調(diào)性、解答函數(shù)不等式問(wèn)題、函數(shù)零點(diǎn)問(wèn)題.運(yùn)用導(dǎo)數(shù)法解答函數(shù)問(wèn)題，需先對(duì)函數(shù)求導(dǎo)，然后運(yùn)用導(dǎo)數(shù)的幾何意義、導(dǎo)函數(shù)與函數(shù)單調(diào)性之間的關(guān)系、極值等來(lái)建立關(guān)系式.下面主要談一談如何用導(dǎo)數(shù)法解答三類(lèi)函數(shù)問(wèn)題.

一、判斷函數(shù)的單調(diào)性

可見(jiàn)，運(yùn)用導(dǎo)數(shù)法解答函數(shù)問(wèn)題（剩余154字）