p1_3.dir

来自「Programs for the book Advanced Engineeri」· DIR 代码 · 共 159 行

x=2.0

x =

     2

abs(x)  % Same value since x>0.

ans =

     2

acos(x)	% If you don't understand this answer, review complex values

ans =

        0+ 1.3170i

acosh(x) %  There are other functions such as asin, asinh, atan, etc.

ans =

    1.3170

angle(x) %  This is zero for a real number

ans =

     0

ceil(x)  % Other functions are fix, floor and round (Try these for x=2.1) 

ans =

     2

cos(x)  % Other functions are cosh, cot, coth, sin, tan, etc.

ans =

   -0.4161

erf(x) % This is an integral; others are expint and gamma

ans =

    0.9953

exp(x)

ans =

    7.3891

gamma(x) % For an integer value, this is (n-1) factorial

ans =

     1

imag(x)  % This is zero for x real 

ans =

     0

log(x) % Others are log10 and log2

ans =

    0.6931

sqrt(x)

ans =

    1.4142

echo off
x=2.0

x =

     2

abs(x)  % Same value since x>0.

ans =

     2

acos(x)	% If you don't understand this answer, review complex values

ans =

        0+ 1.3170i

acosh(x) %  There are other functions such as asin, asinh, atan, etc.

ans =

    1.3170

angle(x) %  This is zero for a real number

ans =

     0

ceil(x)  % Other functions are fix, floor and round (Try these for x=2.1) 

ans =

     2

cos(x)  % Other functions are cosh, cot, coth, sin, tan, etc.

ans =

   -0.4161

erf(x) % This is an integral; others are expint and gamma

ans =

    0.9953

exp(x)

ans =

    7.3891

gamma(x) % For an integer value, this is (n-1) factorial

ans =

     1

imag(x)  % This is zero for x real 

ans =

     0

log(x) % Others are log10 and log2

ans =

    0.6931

sqrt(x)

ans =

    1.4142

echo off