For Exercises 9-18, evaluate the functions for the given values of x . (See Example 2) f ( x ) = − 2 x g ( x ) = | x + 4 | h ( x ) = 1 x − 3 ( f ⋅ g ) ( − 1 )
For Exercises 9-18, evaluate the functions for the given values of x . (See Example 2) f ( x ) = − 2 x g ( x ) = | x + 4 | h ( x ) = 1 x − 3 ( f ⋅ g ) ( − 1 )
Solution Summary: The author explains how to calculate the value of (fcdot g).
ے ملزمة احمد
Q (a) Let f be a linear map from a space X into a space Y and (X1,X2,...,xn) basis for X, show that fis one-to-
one iff (f(x1),f(x2),...,f(x) } linearly independent.
(b) Let X= {ao+ax₁+a2x2+...+anxn, a;ER} be a vector space over R, write with prove a hyperspace and a
hyperplane of X.
مبر خد احمد
Q₂ (a) Let M be a subspace of a vector space X, and A= {fex/ f(x)=0, x E M ), show that whether A is
convex set or not, affine set or not.
Write with prove an
application of Hahn-Banach theorem.
Show that every singleton set in a normed space X is closed and any finite set in X is closed (14M)
Let M be a proper subspace of a finite dimension vector space X over a field F show that
whether: (1) If S is a base for M then S base for X or not, (2) If T base for X then base for M
or not.
(b) Let X-P₂(x) be a vector space over polynomials a field of real numbers R, write with L
prove convex subset of X and hyperspace of X.
Q₂/ (a) Let X-R³ be a vector space over a over a field of real numbers R and
A=((a,b,o), a,bE R), A is a subspace of X, let g be a function from A into R such that
gla,b,o)-a, gEA, find fe X such that g(t)=f(t), tEA.
(b) Let M be a non-empty subset of a space X, show that M is a hyperplane of X iff there
Xiff there
exists fE X/10) and tE F such that M=(xE X/ f(x)=t).
(c) Show that the relation equivalent is an equivalence relation on set of norms on a space
X.
Q/(a)Let X be a finite dimension vector space over a field F and S₁,S2CX such that S₁SS2. Show that
whether (1) if S, is a base for X then base for X or not (2) if S2 is a base for X then S, is a base for X or not
(b) Show that every subspace of vector space is convex and affine set but the conevrse need not to be true.
allet M be a non-empty subset of a vector space X over a field F and x,EX. Show that M is a
hyperspace iff xo+ M is a hyperplane and xo€ xo+M.
bState Hahn-Banach theorem and write with prove an application about it.
Show that every singleten subset and finite subset of a normed space is closed.
Oxfallet f he a function from a normad roace YI
Show tha ir continuour aty.GYiff
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