{
"query": {
"display": "$$-f\\left(x\\right)=4x^{2}+3x-3$$",
"symbolab_question": "CONIC#-f(x)=4x^{2}+3x-3"
},
"solution": {
"level": "PERFORMED",
"subject": "Geometry",
"topic": "Parabola",
"subTopic": "formula",
"default": "(h,k)=(-\\frac{3}{8},\\frac{57}{16}),p=-\\frac{1}{16}"
},
"steps": {
"type": "interim",
"title": "$$-y=4x^{2}+3x-3:\\quad$$Parabola with vertex at $$\\left(h,\\:k\\right)=\\left(-\\frac{3}{8},\\:\\frac{57}{16}\\right),\\:$$and focal length $$|p|=\\frac{1}{16}$$",
"input": "-y=4x^{2}+3x-3",
"steps": [
{
"type": "definition",
"title": "Parabola standard equation",
"text": "$$4p\\left(y-k\\right)=\\left(x-h\\right)^{2}\\:$$ is the standard equation for an up-down facing parabola with vertex at $$\\left(h,\\:k\\right),\\:$$<br/>and a focal length $$|p|$$"
},
{
"type": "interim",
"title": "Rewrite $$-y=4x^{2}+3x-3\\:$$in the standard form",
"input": "-y=4x^{2}+3x-3",
"steps": [
{
"type": "step",
"primary": "Divide by $$-1$$",
"result": "y=-4x^{2}-3x+3"
},
{
"type": "interim",
"title": "Complete the square $$-4x^{2}-3x+3:{\\quad}-4\\left(x+\\frac{3}{8}\\right)^{2}+\\frac{57}{16}$$",
"input": "-4x^{2}-3x+3",
"steps": [
{
"type": "step",
"primary": "Write $$-4x^{2}-3x+3\\:$$in the form: $$x^2+2ax+a^2$$",
"secondary": [
"Factor out $$-4$$"
],
"result": "-4\\left(x^{2}+\\frac{3x}{4}-\\frac{3}{4}\\right)"
},
{
"type": "interim",
"title": "$$2a=\\frac{3}{4}{\\quad:\\quad}a=\\frac{3}{8}$$",
"input": "2a=\\frac{3}{4}",
"steps": [
{
"type": "interim",
"title": "Divide both sides by $$2$$",
"input": "2a=\\frac{3}{4}",
"result": "a=\\frac{3}{8}",
"steps": [
{
"type": "step",
"primary": "Divide both sides by $$2$$",
"result": "\\frac{2a}{2}=\\frac{\\frac{3}{4}}{2}"
},
{
"type": "interim",
"title": "Simplify",
"input": "\\frac{2a}{2}=\\frac{\\frac{3}{4}}{2}",
"result": "a=\\frac{3}{8}",
"steps": [
{
"type": "interim",
"title": "Simplify $$\\frac{2a}{2}:{\\quad}a$$",
"input": "\\frac{2a}{2}",
"steps": [
{
"type": "step",
"primary": "Divide the numbers: $$\\frac{2}{2}=1$$",
"result": "=a"
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Simplify Specific 1Eq",
"gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7n/9TIosDfOyZXH4usT9jsy061ljBSPJeENOw2efoSWuFFDuzzgIzA1F36c+SAFGgRSpN33oxZMojoqvYhvSJACLkpiVA7S8UT8ieezZKu6pQyGeXuoJHAaVrX92ZjOTT"
}
},
{
"type": "interim",
"title": "Simplify $$\\frac{\\frac{3}{4}}{2}:{\\quad}\\frac{3}{8}$$",
"input": "\\frac{\\frac{3}{4}}{2}",
"steps": [
{
"type": "step",
"primary": "Apply the fraction rule: $$\\frac{\\frac{b}{c}}{a}=\\frac{b}{c\\:\\cdot\\:a}$$",
"result": "=\\frac{3}{4\\cdot\\:2}"
},
{
"type": "step",
"primary": "Multiply the numbers: $$4\\cdot\\:2=8$$",
"result": "=\\frac{3}{8}"
}
],
"meta": {
"solvingClass": "Solver",
"interimType": "Generic Simplify Specific 1Eq",
"gptData": "pG0PljGlka7rWtIVHz2xymbOTBTIQkBEGSNjyYYsjjDErT97kX84sZPuiUzCW6s7tiTmKkmeEqHWILbBb88ajacLws1Q9dhE5hAKozRtFuADnzlbPZjyKgy1eUCFsLd5ou0fH4IfJpokJqvIcA4IqqtsDHCGc0gnJHdHN33VLWkeKYFFhGodJZ4mS5Q+F9MLRBHnX1v95RIc5nuXPcUCV6hV3ERKlxKrxLwC9/xsXy8="
}
},
{
"type": "step",
"result": "a=\\frac{3}{8}"
}
],
"meta": {
"interimType": "Generic Simplify 0Eq"
}
}
],
"meta": {
"interimType": "Divide Both Sides Specific 1Eq",
"gptData": "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"
}
}
],
"meta": {
"solvingClass": "Equations",
"interimType": "Equations"
}
},
{
"type": "step",
"primary": "Add and subtract $$\\left(\\frac{3}{8}\\right)^{2}\\:$$",
"result": "-4\\left(x^{2}+\\frac{3x}{4}-\\frac{3}{4}+\\left(\\frac{3}{8}\\right)^{2}-\\left(\\frac{3}{8}\\right)^{2}\\right)"
},
{
"type": "step",
"primary": "$$x^2+2ax+a^2=\\left(x+a\\right)^2$$",
"secondary": [
"$$x^{2}+\\frac{3}{4}x+\\left(\\frac{3}{8}\\right)^{2}=\\left(x+\\frac{3}{8}\\right)^{2}$$",
"Complete the square"
],
"result": "-4\\left(\\left(x+\\frac{3}{8}\\right)^{2}-\\frac{3}{4}-\\left(\\frac{3}{8}\\right)^{2}\\right)"
},
{
"type": "step",
"primary": "Simplify",
"result": "-4\\left(x+\\frac{3}{8}\\right)^{2}+\\frac{57}{16}"
}
],
"meta": {
"solvingClass": "Equations",
"interimType": "Complete Square 1Eq"
}
},
{
"type": "step",
"result": "y=-4\\left(x+\\frac{3}{8}\\right)^{2}+\\frac{57}{16}"
},
{
"type": "step",
"primary": "Subtract $$\\frac{57}{16}$$ from both sides",
"result": "y-\\frac{57}{16}=-4\\left(x+\\frac{3}{8}\\right)^{2}"
},
{
"type": "step",
"primary": "Divide by coefficient of square terms: $$-4$$",
"result": "-\\frac{1}{4}\\left(y-\\frac{57}{16}\\right)=\\left(x+\\frac{3}{8}\\right)^{2}"
},
{
"type": "step",
"primary": "Rewrite in standard form",
"result": "4\\left(-\\frac{1}{16}\\right)\\left(y-\\frac{57}{16}\\right)=\\left(x-\\left(-\\frac{3}{8}\\right)\\right)^{2}"
}
],
"meta": {
"interimType": "Parabola Canonical Format 1Eq"
}
},
{
"type": "step",
"result": "4\\left(-\\frac{1}{16}\\right)\\left(y-\\frac{57}{16}\\right)=\\left(x-\\left(-\\frac{3}{8}\\right)\\right)^{2}"
},
{
"type": "step",
"primary": "Therefore parabola properties are:",
"result": "\\left(h,\\:k\\right)=\\left(-\\frac{3}{8},\\:\\frac{57}{16}\\right),\\:p=-\\frac{1}{16}"
}
],
"meta": {
"solvingClass": "Parabola"
}
},
"plot_output": {
"meta": {
"plotInfo": {
"variable": "x",
"funcsToDraw": {
"funcs": [
{
"evalFormula": "y=\\frac{(x-(-\\frac{3}{8}))^{2}}{4(-\\frac{1}{16})}+\\frac{57}{16}",
"displayFormula": "4(-\\frac{1}{16})(y-\\frac{57}{16})=(x-(-\\frac{3}{8}))^{2}",
"attributes": {
"color": "PURPLE",
"lineType": "NORMAL",
"isAsymptote": false
}
},
{
"evalFormula": "y=\\frac{29}{8}",
"displayFormula": "y=\\frac{29}{8}",
"attributes": {
"color": "GRAY",
"lineType": "NORMAL",
"labels": [
"\\mathrm{directrix}"
],
"isAsymptote": false
}
}
]
},
"pointsToDraw": {
"pointsLatex": [
"(-\\frac{3}{8},\\frac{57}{16})",
"(-\\frac{3}{8},\\frac{7}{2})"
],
"pointsDecimal": [
{
"fst": -0.375,
"snd": 3.5625
},
{
"fst": -0.375,
"snd": 3.5
}
],
"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}{16})(y-\\frac{57}{16})=(x-(-\\frac{3}{8}))^{2}",
"paramsLatex": [],
"paramsReplacementsLatex": []
}
],
"localBoundingBox": {
"xMin": -2.9910714285714284,
"xMax": 2.455357142857143,
"yMin": -1.089285714285714,
"yMax": 4.357142857142858
}
},
"showViewLarger": true
}
}
}
Solution
Solution
Solution steps
Rewrite in the standard form
Therefore parabola properties are:
Graph
Popular Examples
Frequently Asked Questions (FAQ)
What is -f(x)=4x^2+3x-3 ?
The solution to -f(x)=4x^2+3x-3 is Parabola with (h,k)=(-3/8 , 57/16),p=-1/16