國立政治大學
106 學年度碩士班招生考試試題
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考試科目︱基礎數學叫什LMV
象所別︱統計學系 考試時間I 2月1.8日(六)第一節Note. You need to show your work in your solutions for the following problems instead of giving final answers only.
1. (20 points) Suppose that
z
+
tz qd-
- vi f ’ O Z 一 趴 rlIEl--Et 一一 、‘’’,z rtt、 r’d if x = 0﹔ if x<
1 祖d z手。﹔
if l<
x
<
2﹔ if x > 2.Find Ji°''
f(x)dx
andf立。
f(x)dx.
2. (16 points) Find the following 恆的.(a
)肉。(
1 +﹔γ
(b
)阿
一一串通拉
;re立
壘, s(x) (c) _lirn =-立于�:i:;-’
ex, X - ﹒Slil{X
伸統
治﹔刊于)
3, (14 points) Suppose that u is a differentiable function of x such that
u
+
xcos(
包) = 1and u = 0 when x = 1. Let
你的=
fox f/+s
s(
for
x,
y
ε(一oo, oo). Determine whetherf
h品a local minimum or alocal maximum at the point (1, 0). Justify your 個swer.
4. (12 points) Suppose thatαis a real number and α手0. Let
、、IEEE『I/
nu α 1i GIα 1α0’’,’,aBEEt、1、
一-
A(a) Show that 1 is個eigenv,叫ue of
A.
(b) Find an eigenvector of A associated with the eigenvalue 1.
(c) Find all eigenvalues of
A
that缸e not equal to 1.備 言主 一、作答於試題土者,不予計分。