Casio FX-115ESPLUS Manual de usuario descargar pdf (Pagina 44)

E-43

VctA • VctB (Vector dot product)

AVctA15(VECTOR)7(Dot)VctB=

VctA × VctB (Vector cross product)

AVctA*VctB=

Obtain the absolute values of VctC.

A1w(Abs)VctC)=

Determine the angle formed by VctA and VctB to three decimal

places (Fix 3). v

(cos

 =

•







, which becomes  = cos

–1

•







)

1N(SETUP)6(Fix)3

A(VctA15(VECTOR)7(Dot)VctB)/

(1w(Abs)VctA)1w(Abs)

VctB))=

1c(cos

–1

)G)=

Inequality Calculations (INEQ)

You can use the following procedure to solve a quadratic inequality or cubic

inequality.

1. Press Nc1(INEQ) to enter the INEQ Mode.

2. On the menu that appears, select an inequality type.

To select this inequality type: Press this key:

Quadratic inequality

1(aX

+ bX + c )

Cubic inequality

2(aX

+ bX

+ cX + d )

3. On the menu that appears, use keys 1 through 4 to select the inequality

symbol type and orientation.

4. Use the Coefficient Editor that appears to input coefficient values.

• To solve

+ 2x – 3 < 0, for example, input the coefficients a = 1, b = 2,

c = –3 by pressing 1= 2 =- 3 =.

VCTVCT

VCT FIXVCT FIX

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Casio FX-115ESPLUS Manual de usuario Pagina 44

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