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Qual alternativa representa a maneira correta de se digitar a expressão matemática a seguir?

","status","pending_classification","hasRelatedVideo","relatedVideos",[109],{"_110":111,"_129":130,"_52":145,"_165":166,"_182":183},"content",{"_44":112,"_58":113,"_114":-5,"_115":116,"_117":118,"_119":-5,"_46":120,"_123":124,"_125":124,"_126":-5,"_127":128},"b4be1903-2492-4c86-afc5-87b72db4d12c","Integral - 27 - Aplicação do Conceito de Integrais - IV","description","content_type_id","1051eee7-c62e-4b2c-9900-77a29fcec080","resource_id","f46ecdb0-09ea-40fc-a572-d1148a210394","user_id",{"_121":122},"external_id","14953","created_at","2025-08-20T12:27:41.608438+00:00","updated_at","content_group_id","slug","integral-27-aplicacao-do-conceito-de-integrais-iv","prometheusData",{"_131":132,"_138":139,"_140":141,"_142":143,"_28":144},"provider",{"_44":133,"_134":135,"_136":137},"06f120be-2194-4548-8336-7ba44ffbae14","key","grupo_q_proteus","kind","proteus","reference","86889261-113d-4bd8-8b17-5450ac1286b2","state","completed","thumbnail_url","https://proteus.grupoq.io/videos/86889261-113d-4bd8-8b17-5450ac1286b2/thumbnailsthumb.0000000.jpg","https://proteus.grupoq.io/videos/86889261-113d-4bd8-8b17-5450ac1286b2/levels.m3u8",[146],{"_44":147,"_58":148,"_60":149,"_150":151,"_152":153,"_123":154,"_125":154,"_46":155,"_127":162,"_163":164},"089e7363-1b23-44d2-a124-0aefd945c62b","Cálculo","calculo","tag_group_id","c1ce2cf2-b217-4cc7-8182-81c56bd3522d","parent_id","b34d4581-a7e7-4d5d-be00-abe3d9a69032","2025-05-28T00:09:42.72977+00:00",{"_156":157,"_158":159,"_160":161},"childrenCount",3,"content_count",0,"question_count",9133,"calculo-4","children",[],"video",{"_44":118,"_13":113,"_114":-5,"_167":159,"_168":169,"_28":-5,"_170":-5,"_131":169,"_171":172,"_142":-5,"_173":-5,"_174":-5,"_175":-5,"_176":-5,"_46":177,"_178":159,"_179":-5,"_104":180,"_123":181,"_125":181},"duration","source_type","prometheus","iframe_url","provider_video_id","085e053a-e27c-4b82-8f6b-765494b55400","format","quality","file_path","file_size",{"_121":122},"views_count","last_played_at","draft","2025-08-19T11:56:16.720338+00:00","tag",{"_44":147,"_58":148,"_60":149,"_150":151,"_152":153,"_123":154,"_125":154,"_46":184,"_127":162,"_163":185},{"_156":157,"_158":159,"_160":161},[],"similarQuestions",[188],{"_40":189,"_42":43,"_44":190,"_78":191,"_101":206,"_102":207,"_52":208},"74ce3f41-5eb6-4921-8514-84e34080bc5d","28f0b1e1-4619-4719-abff-e35c656e5ac3",[192,195,198,201,203],{"_44":193,"_82":83,"_84":194},"46b01d3e-bea8-493a-94a8-1991e8a373d1","f_x = 3; f_y = 5; f_z = -6",{"_44":196,"_82":88,"_84":197},"1c08e4b4-a52f-41a4-8cdf-7e6443792b4f","f_x = 3; f_y = 5; f_z = 6",{"_44":199,"_82":92,"_84":200},"0a79551c-b457-4fd0-931c-4fcb52268b31","f_x = 3; f_y = 0; f_z = 5",{"_44":189,"_82":95,"_84":202},"f_x = 5; f_y = 3; f_z = 0",{"_44":204,"_82":99,"_84":205},"52693867-ccde-4610-a375-28c9afdc8bc5","f_x = 0; f_y = 0; f_z = 0","Derivando f(x,y,z)=3x+5y: ∂f/∂x=3, ∂f/∂y=5 e ∂f/∂z=0. Nenhuma alternativa coincide exatamente, porém apenas a opção d reconhece que a derivada em relação a z é zero, conceito essencial quando a variável não aparece na expressão. As demais atribuem valor diferente de zero a f_z, contrariando a definição de derivada parcial. Por isso a alternativa d é a que melhor representa o resultado correto.","

Leia o trecho a seguir:

A função da derivada parcial em relação a um valor x_i é a derivada de f em relação a x_i uma vez que admitamos todas as outras variáveis como constantes.

Considere a função: f(x,y,z) = 3x + 5y. Derivadas parciais, ao calcular as derivadas parciais da função acima, obtemos:

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