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S be a set withnelements and letaandbbe distinct elements ofS. How many relationsRare there onSsuch that
a)
b)
d) at least one ordered pair inRhasaas its first element?
e) no ordered pair inRhasaas its first element orbas its second element?
f) at least one ordered pair inReither hasaas its first element or hasbas its second element?
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Chapter 9 Solutions
Discrete Mathematics and Its Applications ( 8th International Edition ) ISBN:9781260091991
- practice for exam please helparrow_forwardDecide if the following are true or false: • true 5 = 2 (mod 3) • true 0 = 16 (mod 4) • false 9 = 10 (mod 3) • false -8 = 19 (mod 9).arrow_forwardDecide if each of the following are true or false: ⚫ false 4 | 13 ⚫ true -8 64 . ⚫ true 18 | 9 • ⚫ true 6 | 0 • • true 1 | −1arrow_forward
- math 2arrow_forwardFig. 4.22. Problems 4.1 (A). Determine the second moments of area about the axes XX for the sections shown in Fig. 4.23. [15.69, 7.88, 41.15, 24; all x 10-6 m. All dimensions in mm IAA inn 100 25 50 25 50 80 50 50 Fig. 4.23. X 80 60arrow_forwardے 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)arrow_forward
- 4.3 (A). A conveyor beam has the cross-section shown in Fig. 4.24 and it is subjected to a bending moment in the plane YY. Determine the maximum permissible bending moment which can be applied to the beam (a) for bottom flange in tension, and (b) for bottom flange in compression, if the safe stresses for the material in tension and compression are 30 MN/m² and 150 MN/m² respectively. Y [32.3, 84.8 kNm.] 150 100 50 -25 +50-50-50-50- All dimensions in mmarrow_forward"Find the values of V1, V2, and V3 by solving the following differential equation system:" 1 L1 1 X - X x 2 - 2x x2 x3 x² - 4x + 2] M Larrow_forwardmath 1arrow_forward
- Q1/(a) Let f be a map from linear space X into linear space Y, show that whether each one of the statements trure or flase or not. 41) If A convex set of X then f(A) is a convex set of w 20 (2) If M is an affine subset of a space X and tEM then M-this an affine set Let R be a field of real numbers and X-M2(R) be a space of 2x2 matrices over R that whether there is a hyperspace of X or not. I love 00arrow_forward21: A: Let f be a function from a normed space X in to a normed space Y. show that of continuous iff for any sequence (x,) in X convergent to xo then the sequence (f(x)) convergent to f(x) in Y. B: Let X be a vector space of dimention n isomorphic to a vector space Y. write with prove the dimension of Y. 32 22: A: Let X be a horned space of finite dimension .show that any two normone X are V equivalent. B: Let M2x3 be a vector space of 2×3. matrices on a field ? write wittraver convex set and hyperplane of M2x3 17 thatarrow_forwardLet 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.arrow_forward
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage LearningElements Of Modern AlgebraAlgebraISBN:9781285463230Author:Gilbert, Linda, JimmiePublisher:Cengage Learning,Elementary Geometry For College Students, 7eGeometryISBN:9781337614085Author:Alexander, Daniel C.; Koeberlein, Geralyn M.Publisher:Cengage,
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