Question

一道数学题，求大神来解答

题目简单的 见图 谢谢

Answer 1

(a) f(a)=a²-a+5
(b) f(-a)=a²+a+5
(c) -f(a)=-a²+a-5
(d) f(a+h)=(a+h)²-(a+h)+5
(e) f(a)+f(h)=(a²+h²)-(a+h)+10
(f) =2a-1+h

Answer 2

（a）a^2-a+5
（b）a^2+a+5
（c）-a^2+a-5
（d）a^2+h^2+2ah-a-h+5
（e）a^2+h^2-a-h+10
（f）h+2a-1
如果对的话，请采纳

Answer 3

(a)f(a)=a²-a+5
(b)f(-a)=(-a)²-(-a)+5=a²+a+5
(c)-f(a)=-(a²-a+5)=-a²+a-5
(d)f(a+h)=(a+h)² - (a+h) + 5
=a²+2ah+h²-a-h+5
(e)f(a)+f(h)=a²-a+5+h²-h+5
=a²+h²-a-h+10
(f)原式=[a²+2ah+h²-a-h+5-(a²-a+5)]/h
=(a²+2ah+h²-a-h+5-a²+a-5)/h
=(2ah+h²-h)/h
=2a+h-1