求下列各式的值用中文作答(20分)

👨🏻‍🏫 學術台數學

cheung

2008-11-30 5:18 am

2.己知f(X)=-2(1.5)^×求下列各式的值
a.f(-3)
b.f(0)
c. f(2.5)
d.(6.3)

更新1:

2.己知f(X)=3(2.5)^×求下列各式的值 a.f(-4) b.f(0) c. f(2) d.(3.5)

更新2:

d.f(3.5)

回答 (1)

Uncle Michael

2008-11-30 6:18 am

✔ 最佳答案

2.
a.
f(-3)
= -2(1.5)-3
= -0.5926

b.
f(0)
= -2(1.5)0
= -2

c.
f(2.5)
= -2(1.5)2.5
= -5.511

d.
f(6.3)
= -2(1.5)6.3
= -25.73

=====
2.
a.
f(-4)
= 3(2.5)-4
= 0.0768

b.
f(0)
= 3(2.5)0
= 3

c.
f(2)
= 3(2.5)2
= 18.75

d.
f(3.5)
= 3(2.5)3.5
= 74.12
=

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求下列各式的值 用中文作答(20分)

回答 (1)

求下列各式的值用中文作答(20分)