Matlab数学实验第二版课后习题答案胡良剑第一章%Page20,ex1(5)等于exp(1),exp(2);exp(3),exp(4)(7) 3=1*3,8=2*4(8) a为各列最小值，b为最小值所在的行号(10) 1=4,false,2=3,false,3=2,ture,4=1,ture(11) 答案表明：编址第2元素满足不等式(30=20)和编址第4元素满足不等式(40=10)(12) 答案表明：编址第2行第1列元素满足不等式(30=20)和编址第2行第2列元素满足不等式(40=10)%Page20,ex2(1)a,b,c的值尽管都是1,但数据类型分别为数值，字符，逻辑，注意a与c相等，但他们不等于b(2)double(fun)输出的分别是字符a,b,s,(,x,)的ASCII码%Page20,ex3 r=2;p=;n=12; T=log(r)/n/log(1+*p)T=%Page20,ex4 x=-2:2;f=x.A4-2.Ax; fmin,min_index=min(f)fmin=%最小值min_index=54%最小值点编址 x(min_index)ans=%最小值点 f1,x1_index=min(abs(f)%求近似根-绝对值最小的点f1=x1_index=24 x(x1_index)ans= x(x1_index)=;f=x.A4-2.Ax;%删去绝对值最小的点以求函数绝对值次小的点 f2,x2_index=min(abs(f)%求另一近似根-函数绝对值次小的点f2=x2_index=65 x(x2_index)ans=%Page20,ex5 z=magic(10)z=929918156774515840988071416735557644148188202254566370478587192136062697128869325296168755234172476839042492633652358289914830323966796139597293138457210129496783537444653111810077843643502759sum(z)ans=505505505505505505505505505505sum(diag(z)ans=505z(:,2)/sqrt(3)ans=z(8,:)=z(8,:)+z(3,:)z=9299181567745158409880714167355576441481882022545663704785871921360626971288693252961687552341724768390424926336523582899148303239668387101115119838710111511910129496783537444653111810077843643502759