Casio FA-124 User's Guide download pdf (Page 14)

CASIO

E-12

Calculate the local minimum value of the graphed function.

(G-SLV)(MIN)

Calculate the local maximum value of the graphed function.

(G-SLV)(MAX)

Drawing an Integration Graph

Example: To determine the integration result for the quadratic function y =–x

+4x within the range of x =0to4.

At the same time, draw the function graph for the definite integral derived from

the quadratic function and verify the results.

Use View Window to configure the graph screen coordinate values.

KD(GRAPH)

K(SET UP)(Line))

(V-WIN)

Configure the following settings: Xmin = –2, Xmax = 8, Ymin = –6, Ymax = 13.

AUGUAAEU

@BU

Input the function y =–x

+4x into area Y1, and

(Y1, 0, X) into area Y2.

)

TVCTU

*(CALC)(

°dx)(Y)

@?TU

Graph the function.

(DRAW)

Use the G-SOLVE function to calculate the definite integral result of the

graphed quadratic equation for

x =0to4.

(G-SLV)(E)(



dx)

Use the D and A keys to select one of the graphs and then specify the

definite integral range.

U?UCU

Definite integral result: 10.66666667

Next, trace the function graph of the definite integral result of the graphed

quadratic equation, and compare it with the previous result.

(TRCE)

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Casio FA-124 User's Guide Page 14