vertices y=-2x^2

{ "query": { "display": "vertices $$y=-2x^{2}$$", "symbolab_question": "CONIC#vertices y=-2x^{2}" }, "solution": { "level": "PERFORMED", "subject": "Geometry", "topic": "Parabola", "subTopic": "vertices", "default": "\\mathrm{Maximum}\\:(0,0)", "meta": { "showVerify": true } }, "methods": [ { "method": "Find vertex using polynomial form", "query": { "display": "vertex quadratic $$y=-2x^{2}$$", "symbolab_question": "vertexquadratic y=-2x^{2}" } }, { "method": "Find vertex using parabola form", "query": { "display": "vertex parabola $$y=-2x^{2}$$", "symbolab_question": "vertexparabola y=-2x^{2}" } }, { "method": "Find vertex using vertex form", "query": { "display": "vertex form $$y=-2x^{2}$$", "symbolab_question": "vertexform y=-2x^{2}" } }, { "method": "Find vertex using averaging the zeros", "query": { "display": "vertex zeros $$y=-2x^{2}$$", "symbolab_question": "vertexzeros y=-2x^{2}" } } ], "steps": { "type": "interim", "title": "Parabola vertex given $$y=-2x^{2}:{\\quad}$$Maximum $$\\left(0,\\:0\\right)$$", "input": "y=-2x^{2}", "steps": [ { "type": "definition", "title": "Parabola equation in polynomial form", "text": "The vertex of an up-down facing parabola of the form $$y=ax^2+bx+c\\:$$is $$x_{v}=-\\frac{b}{2a}$$" }, { "type": "step", "primary": "The parabola parameters are:", "result": "a=-2,\\:b=0,\\:c=0" }, { "type": "step", "primary": "$$x_{v}=-\\frac{b}{2a}$$", "result": "x_{v}=-\\frac{0}{2\\left(-2\\right)}" }, { "type": "step", "primary": "Simplify", "result": "x_{v}=0" }, { "type": "interim", "title": "Plug in $$x_{v}=0\\:$$to find the $$y_{v}\\:$$value", "input": "y_{v}=-2\\cdot\\:0^{2}", "result": "y_{v}=0", "steps": [ { "type": "step", "primary": "Simplify", "result": "y_{v}=0" } ], "meta": { "interimType": "Plug In Value 2Eq" } }, { "type": "step", "primary": "Therefore the parabola vertex is", "result": "\\left(0,\\:0\\right)" }, { "type": "step", "primary": "If $$a<0,\\:$$then the vertex is a maximum value<br/>If $$a>0,\\:$$then the vertex is a minimum value<br/>$$a=-2$$", "result": "\\mathrm{Maximum}\\:\\left(0,\\:0\\right)" } ], "meta": { "solvingClass": "Parabola" } }, "plot_output": { "meta": { "plotInfo": { "variable": "x", "funcsToDraw": { "funcs": [ { "evalFormula": "y=\\frac{x^{2}}{4(-\\frac{1}{8})}+0", "displayFormula": "4(-\\frac{1}{8})y=x^{2}", "attributes": { "color": "PURPLE", "lineType": "NORMAL", "isAsymptote": false } }, { "evalFormula": "y=\\frac{1}{8}", "displayFormula": "y=\\frac{1}{8}", "attributes": { "color": "GRAY", "lineType": "NORMAL", "labels": [ "\\mathrm{directrix}" ], "isAsymptote": false } } ] }, "pointsToDraw": { "pointsLatex": [ "(0,0)", "(0,-\\frac{1}{8})" ], "pointsDecimal": [ { "fst": 0, "snd": 0 }, { "fst": 0, "snd": -0.125 } ], "attributes": [ { "color": "PURPLE", "labels": [ "\\mathrm{vertex}" ], "labelTypes": [ "DEFAULT" ], "labelColors": [ "PURPLE" ] }, { "color": "PURPLE", "labels": [ "\\mathrm{focus}" ], "labelTypes": [ "DEFAULT" ], "labelColors": [ "PURPLE" ] } ] }, "functionChanges": [ { "origFormulaLatex": [], "finalFormulaLatex": [], "plotTitle": "4(-\\frac{1}{8})(y)=x^{2}", "paramsLatex": [], "paramsReplacementsLatex": [] } ], "localBoundingBox": { "xMin": -1.40625, "xMax": 1.40625, "yMin": -1.40625, "yMax": 1.40625 } }, "showViewLarger": true } }, "meta": { "showVerify": true } }