解释一下题意

来源:百度知道 编辑:UC知道 时间:2024/06/03 21:04:47
Let f(x)=-4X^2+8X+13 Find g'(3) Show that the linear approximation to g(3+△x) always gives an answer which is too large, regardless of whether △x is positive or negative. Interpret your answer geometrically by drawing graph of g and its tangent line when x=3.
这道题的意思,我没有完全理解,谁能帮我解释一下 谢谢

设 f(x)=-4X^2+8X+13 ,求g'(3)并证明 g(3+△x)的极限总是无穷大,不管△x 是正还是负。画出函数g的曲线图,和当x=3时的切线来解释你的答案。

大概是这样 自己再斟酌一下