Question 1194937
.


For me, every such foreword 


<pre>
    "Solve the following practical application. Provide a systematic solution with illustrations"
</pre>

is a clear sign and a warning &nbsp;&nbsp;do &nbsp;not &nbsp;touch &nbsp;"the problem".



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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Why ? - - - Because I am firmly convinced 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;that making illustrations for a student

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;is not a teacher's job.


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