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<Input>
<Text-field style="Title" layout="Title">Harj 6 ohje</Text-field>
<Text-field style="Author" layout="Author">6.3.2001</Text-field>
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<Group labelreference="L3" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">restart:</Text-field>
</Input>
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<Group labelreference="L4" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">with(plots):setoptions3d(axes=boxed,orientation=[-30,50]):</Text-field>
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<Group labelreference="L5" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal"><Font encoding="UTF-8">#read(&quot;c:\134\134opetus\134\134maple\134\134v201.mpl&quot;):
</Font>#read(&quot;/home/apiola/opetus/peruskurssi/v2-3/201/maple/v201.mpl&quot;);
read(&quot;/p/edu/mat-1.414/maple/v201.mpl&quot;):</Text-field>
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</Group>
<Group labelreference="L6" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">print(tangtaso);</Text-field>
</Input>
</Group>
<Group labelreference="L7" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">print(jana2dpp); print(jana2dpv);</Text-field>
</Input>
</Group>
<Group labelreference="L8" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">print(jana3dpp); print(jana3dpv);</Text-field>
</Input>
</Group>
<Group labelreference="L9" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">print(Gr2);print(Sd2);</Text-field>
</Input>
</Group>
<Group labelreference="L10" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">print(Gr2L);</Text-field>
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<Group labelreference="L11" drawlabel="true">
<Input>
<Text-field style="Normal" layout="Normal"><Font encoding="UTF-8">Hiukan hankaluuksia: Paitsi linalg/LinearAlgebra-erot, on vanha lista/vektori-dilemma. Jotkut funktiot haluavat listan (esim. plotit), kun taas vektorioperaatiot janoavat vektoreita.  Aika hyvin p\342\200\260rj\342\200\260t\342\200\260\342\200\260n l2v-funktion avulla. Muuten, LinearAlgebra-kirjastossa on varsin mahtavia ty\313\206kaluja ja ty\313\206skentelymukavuuskin on merkitt\342\200\260v\342\200\260sti parantunut. </Font></Text-field>
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<Section collapsed="true" MultipleChoiceAnswerIndex="-1" MultipleChoiceRandomizeChoices="false" TrueFalseAnswerIndex="-1" EssayAnswerRows="5" EssayAnswerColumns="60"><Title>
<Text-field style="Heading 1" layout="Heading 1">AV teht. 3</Text-field></Title>
<Text-field style="Normal" layout="Normal"></Text-field>
<Group labelreference="L12" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">display([spacecurve([x,0,x],x=-1..1,thickness=2,color=blue),spacecurve([0,y,y],y=-1..1,thickness=2,color=red),plot3d(1,x=-1..1,y=-1..1,grid=[5,5],style=wireframe)]);</Text-field>
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<Section collapsed="true" MultipleChoiceAnswerIndex="-1" MultipleChoiceRandomizeChoices="false" TrueFalseAnswerIndex="-1" EssayAnswerRows="5" EssayAnswerColumns="60"><Title>
<Text-field style="Heading 1" layout="Heading 1">AV teht. 4 / LV teht. 5</Text-field></Title>
<Group labelreference="L13" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">f:=(x,y)-&gt;abs(x*y);Gr2(f,1,1);convert(%,list);type(%,list);</Text-field>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">Gr2L:=(f,a,b)-&gt;convert(&lt;D[1](f)(a,b) | D[2](f)(a,b)&gt;,list): </Text-field>
</Input>
</Group>
<Group labelreference="L14" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">display([contourplot(f(x,y),x=0..2,y=0..2,contours=[1,2,3]),jana2dpv([1,1],Gr2L(f,1,1))],scaling=constrained);</Text-field>
</Input>
</Group>
<Group labelreference="L15" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">gkentta:=fieldplot(Gr2L(f,x,y),x=0.1..2,y=0.1..2,arrows=slim,color=x):</Text-field>
</Input>
</Group>
<Group labelreference="L16" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">display([contourplot(f(x,y),x=0..2,y=0..2,contours=20),gkentta],scaling=constrained);</Text-field>
</Input>
</Group>
</Section>
<Section collapsed="true" MultipleChoiceAnswerIndex="-1" MultipleChoiceRandomizeChoices="false" TrueFalseAnswerIndex="-1" EssayAnswerRows="5" EssayAnswerColumns="60"><Title>
<Text-field style="Heading 1" layout="Heading 1">AV teht. 6 ja LV teht. 4</Text-field></Title>
<Group labelreference="L17" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">with(LinearAlgebra):</Text-field>
</Input>
</Group>
<Group labelreference="L18" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">Gr2:=(f,a,b)-&gt;&lt;D[1](f)(a,b) | D[2](f)(a,b)&gt;:
Sd2:=(f,a,b,u)-&gt;Gr2(f,a,b).LinearAlgebra[Normalize](u,2):</Text-field>
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<Group labelreference="L19" drawlabel="true">
<Input>
<Text-field style="Normal" layout="Normal"><Font encoding="UTF-8">M\342\200\260\342\200\260riteltiin LinearAlgebra-tyylill\342\200\260 2d-gradientti ja suunnattu derivaatta. Pakkauksessa linalag on valmis grad-funktio. T\342\200\260ss\342\200\260 nyt tulee siirtym\342\200\260kauden hankaluudet erilaisten tietorakenteiden kanssa. Siksi (ja ehk\342\200\260 opinkin kannalta) on parempi t\342\200\260ss\342\200\260 m\342\200\260\342\200\260ritell\342\200\260 alusta alkaen,  jopa dimensiosta riippuvasti.</Font></Text-field>
<Text-field style="Normal" layout="Normal"><Font encoding="UTF-8">Hankaluutena on, ett\342\200\260 Sd2 on rakennettu niin, ett\342\200\260 u on pystyvektori (muistamisvaikeus), sitten on muistettava, ett\342\200\260 LinearAlgebra-pystyvektori esitet\342\200\260\342\200\260n  &lt;a,b&gt;.</Font></Text-field>
<Text-field style="Normal" layout="Normal"><Font encoding="UTF-8">linalg[grad]-esimerkki alla my\313\206s. On dimensiosta riippumaton.</Font></Text-field>
<Text-field style="Normal" layout="Normal"></Text-field>
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<Group labelreference="L20" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">f:=(x,y)-&gt;x*y: Gr2(f,x,y);Sd2(f,1,2,&lt;1,1&gt;);</Text-field>
</Input>
</Group>
<Group labelreference="L21" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">&lt;1,1&gt;;</Text-field>
</Input>
</Group>
<Group labelreference="L22" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">linalg[grad](f(x,y),[x,y]);linalg[grad](x*y*z,[x,y,z]);</Text-field>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">type(%,vector);</Text-field>
</Input>
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<Group labelreference="L23" drawlabel="true">
<Input>
<Text-field style="Normal" layout="Normal">Kannattaa muuntaa Matrix- ja Vector-komennoilla ... vrt. ..H/ratk/harj8lv.mws</Text-field>
</Input>
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</Section>
<Section collapsed="true" MultipleChoiceAnswerIndex="-1" MultipleChoiceRandomizeChoices="false" TrueFalseAnswerIndex="-1" EssayAnswerRows="5" EssayAnswerColumns="60"><Title>
<Text-field style="Heading 1" layout="Heading 1">LV teht. 6</Text-field></Title>
<Group labelreference="L24" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">print(tangtaso);</Text-field>
</Input>
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<Group labelreference="L25" drawlabel="true">
<Input>
<Text-field style="Normal" layout="Normal"><Font encoding="UTF-8">Otetaan esimerkkifunktio ja asetetaan sen kuvaajapinnalle tangenttitaso pisteeseen (2,0,f(2,0)).  Piirret\342\200\260\342\200\260n pinta, taso ja jana pisteiden (2,0,0) ja (2,0,f(2,0)) v\342\200\260lille.</Font></Text-field>
</Input>
</Group>
<Group labelreference="L26" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">f:=(x,y)-&gt;sqrt(2*x^2+exp(2*y));</Text-field>
</Input>
</Group>
<Group labelreference="L27" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal">display([plot3d(f(x,y), x=0..4, y=-2..2,color=f(x,y),style=patchnogrid,grid =[50, 50], axes=boxed),tangtaso(f,2,0,2),jana3dpp([2,0,f(2,0)+0.2],[2,0,0])]);
</Text-field>
</Input>
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<Group labelreference="L28" drawlabel="true">
<Input>
<Text-field prompt="&gt; " style="Maple Input" layout="Normal"></Text-field>
</Input>
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