MATLAB FINANCIAL DERIVATIVES TOOLBOX Manual do Utilizador descarregar pdf (Página 35)

Matlab’s command:

>> d_div1=-3:1.5:3, d_div2=1:5

>> d_div2./d_div2, d_div1./d_div2, d_div2./5

Matlab’s response:

d_div1 =

-3.0000 -1.5000 0 1.5000 3.0000

d_div2 =

1 2 3 4 5

ans =

1 1 1 1 1

ans =

-3.0000 -0.7500 0 0.3750 0.6000

ans =

0.2000 0.4000 0.6000 0.8000 1.0000

Comments:

Examples of dot division.

Matlab’s command:

>>d_div2./d_div1

>> d_div2(3)=0; d_div1./d_div2

>> 1/d_div1

Matlab’s response:

Warning: Divide by zero.

(Type "warning off MATLAB:divideByZero" to suppress this

warning.)

ans =

-0.3333 -1.3333 Inf 2.6667 1.6667

Warning: Divide by zero.

(Type "warning off MATLAB:divideByZero" to suppress this

warning.)

ans =

-3.0000 -0.7500 NaN 0.3750 0.6000

??? Error using ==> /

Matrix dimensions must agree.

Comments:

Examples of pat

hological results of dot division. In the first case,

Matlab returns the result after displaying a warning concerning

the division of a number with zero that leads to an infinity

quantity. Observe that Matlab returns an

f for such operations.

Likewise, in the second case, the division of 0/0 is not defined

and a Not

Number,

is returned in the vector. In the third

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 118 119

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