Mister Exam

arctg(x/y) canonical form

The teacher will be very surprised to see your correct solution 😉

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The graph:

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y: [, ]
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The solution

You have entered [src]
    /x\    
atan|-| = 0
    \y/    
$$\operatorname{atan}{\left(\frac{x}{y} \right)} = 0$$
atan(x/y) = 0
The graph
arctg(x/y) canonical form