{ "query": { "display": "vertices $$f\\left(x\\right)=3x^{2}+1$$", "symbolab_question": "CONIC#vertices f(x)=3x^{2}+1" }, "solution": { "level": "PERFORMED", "subject": "Geometry", "topic": "Parabola", "subTopic": "vertices", "default": "\\mathrm{Minimum}\\:(0,1)", "meta": { "showVerify": true } }, "methods": [ { "method": "Find vertex using polynomial form", "query": { "display": "vertex quadratic $$y=3x^{2}+1$$", "symbolab_question": "vertexquadratic y=3x^{2}+1" } }, { "method": "Find vertex using parabola form", "query": { "display": "vertex parabola $$y=3x^{2}+1$$", "symbolab_question": "vertexparabola y=3x^{2}+1" } }, { "method": "Find vertex using vertex form", "query": { "display": "vertex form $$y=3x^{2}+1$$", "symbolab_question": "vertexform y=3x^{2}+1" } } ], "steps": { "type": "interim", "title": "Parabola vertex given $$y=3x^{2}+1:{\\quad}$$Minimum $$\\left(0,\\:1\\right)$$", "input": "y=3x^{2}+1", "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=3,\\:b=0,\\:c=1" }, { "type": "step", "primary": "$$x_{v}=-\\frac{b}{2a}$$", "result": "x_{v}=-\\frac{0}{2\\cdot\\:3}" }, { "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}=3\\cdot\\:0^{2}+1", "result": "y_{v}=1", "steps": [ { "type": "step", "primary": "Simplify", "result": "y_{v}=1" } ], "meta": { "interimType": "Plug In Value 2Eq" } }, { "type": "step", "primary": "Therefore the parabola vertex is", "result": "\\left(0,\\:1\\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/>$$a=3$$", "result": "\\mathrm{Minimum}\\:\\left(0,\\:1\\right)" } ], "meta": { "solvingClass": "Parabola" } }, "plot_output": { "meta": { "plotInfo": { "variable": "x", "funcsToDraw": { "funcs": [ { "evalFormula": "y=\\frac{x^{2}}{4\\frac{1}{12}}+1", "displayFormula": "4\\frac{1}{12}(y-1)=x^{2}", "attributes": { "color": "PURPLE", "lineType": "NORMAL", "isAsymptote": false } }, { "evalFormula": "y=\\frac{11}{12}", "displayFormula": "y=\\frac{11}{12}", "attributes": { "color": "GRAY", "lineType": "NORMAL", "labels": [ "\\mathrm{directrix}" ], "isAsymptote": false } } ] }, "pointsToDraw": { "pointsLatex": [ "(0,1)", "(0,\\frac{13}{12})" ], "pointsDecimal": [ { "fst": 0, "snd": 1 }, { "fst": 0, "snd": 1.0833333333333333 } ], "attributes": [ { "color": "PURPLE", "labels": [ "\\mathrm{vertex}" ], "labelTypes": [ "DEFAULT" ], "labelColors": [ "PURPLE" ] }, { "color": "PURPLE", "labels": [ "\\mathrm{focus}" ], "labelTypes": [ "DEFAULT" ], "labelColors": [ "PURPLE" ] } ] }, "functionChanges": [ { "origFormulaLatex": [], "finalFormulaLatex": [], "plotTitle": "4\\cdot \\frac{1}{12}(y-1)=x^{2}", "paramsLatex": [], "paramsReplacementsLatex": [] } ], "localBoundingBox": { "xMin": -0.9523809523809523, "xMax": 0.9523809523809523, "yMin": -0.38095238095238093, "yMax": 1.5238095238095237 } }, "showViewLarger": true } }, "meta": { "showVerify": true } }