<div>1- Is there any guide where I can learn post script notation for mathematical expressions well? i.e <strong>x^3</strong> is written as <strong>x 3 exp</strong> in postscript notation.</div>
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<div>2- When you want to skech a function of two variables, do you really need to have</div>
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<div><strong>\psset{Alpha=25,Beta=15}</strong></div>
<div> and what happenes if you do not put it? will you get the wrong graph?</div>
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<div>3- How do you know which valuve of Alpha and Beta you need to use?</div>
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<div>I attach my current assignment solution here as a pdf file and I sketched the two functions of two variables by without calling Alpha and Beta.</div>
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<div>Can you please look at the graphs in my file and say I am on the right track or not?</div>
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<div>Thanks</div>