![](https://play-lh.googleusercontent.com/a-/ALV-UjWZkJgVdfVEgsTmGRzgpZAFsKU9jx5EXBzThFDXyWMrQHSVGXS5=s32)
Rudolf Elizabeth
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doesn't show calculation of focus and directrix Has a flaw in calculations y= -1/4(×+3)^2+5 The software gives the points A= 7.472 and the B = -1,472 this is incorect the A= -7.472 and the B point = 1.472 So piece of garbage
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