Cho hàm số <span class="MathJax_Preview" style="color: inherit;"><span class="MJXp-math" id="MJXp-Span-1"><span class="MJXp-mstyle" id="MJXp-Span-2"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-3">y</span><span class="MJXp-mo" id="MJXp-Span-4" style="margin-left: 0.333em; margin-right: 0.333em;">=</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-5">f</span><span class="MJXp-mo" id="MJXp-Span-6" style="margin-left: 0em; margin-right: 0em;">(</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-7">x</span><span class="MJXp-mo" id="MJXp-Span-8" style="margin-left: 0em; margin-right: 0em;">)</span><span class="MJXp-mo" id="MJXp-Span-9" style="margin-left: 0.333em; margin-right: 0.333em;">=</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-10">m</span><span class="MJXp-mrow" id="MJXp-Span-11"><span class="MJXp-msubsup" id="MJXp-Span-12"><span class="MJXp-mrow" id="MJXp-Span-13" style="margin-right: 0.05em;"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-14">x</span></span><span class="MJXp-mrow MJXp-script" id="MJXp-Span-15" style="vertical-align: 0.5em;"><span class="MJXp-mn" id="MJXp-Span-16">4</span></span></span></span><span class="MJXp-mo" id="MJXp-Span-17" style="margin-left: 0.267em; margin-right: 0.267em;">+</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-18">n</span><span class="MJXp-mrow" id="MJXp-Span-19"><span class="MJXp-msubsup" id="MJXp-Span-20"><span class="MJXp-mrow" id="MJXp-Span-21" style="margin-right: 0.05em;"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-22">x</span></span><span class="MJXp-mrow MJXp-script" id="MJXp-Span-23" style="vertical-align: 0.5em;"><span class="MJXp-mn" id="MJXp-Span-24">3</span></span></span></span><span class="MJXp-mo" id="MJXp-Span-25" style="margin-left: 0.267em; margin-right: 0.267em;">+</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-26">p</span><span class="MJXp-mrow" id="MJXp-Span-27"><span class="MJXp-msubsup" id="MJXp-Span-28"><span class="MJXp-mrow" id="MJXp-Span-29" style="margin-right: 0.05em;"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-30">x</span></span><span class="MJXp-mrow MJXp-script" id="MJXp-Span-31" style="vertical-align: 0.5em;"><span class="MJXp-mn" id="MJXp-Span-32">2</span></span></span></span><span class="MJXp-mo" id="MJXp-Span-33" style="margin-left: 0.267em; margin-right: 0.267em;">+</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-34">q</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-35">x</span><span class="MJXp-mo" id="MJXp-Span-36" style="margin-left: 0.267em; margin-right: 0.267em;">+</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-37">r</span></span></span></span><span id="MathJax-Element-1-Frame" class="mjx-chtml MathJax_CHTML MJXc-processed" tabindex="0" style="font-size: 127%;"><span id="MJXc-Node-1" class="mjx-math"><span id="MJXc-Node-2" class="mjx-mrow"><span id="MJXc-Node-3" class="mjx-mstyle"><span id="MJXc-Node-4" class="mjx-mrow" style="font-size: 144%;"><span id="MJXc-Node-5" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.495em; padding-right: 0.006em;">y</span></span><span id="MJXc-Node-6" class="mjx-mo MJXc-space3"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.101em; padding-bottom: 0.298em;">=</span></span><span id="MJXc-Node-7" class="mjx-mi MJXc-space3"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.495em; padding-bottom: 0.495em; padding-right: 0.06em;">f</span></span><span id="MJXc-Node-8" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.445em; padding-bottom: 0.593em;">(</span></span><span id="MJXc-Node-9" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">x</span></span><span id="MJXc-Node-10" class="mjx-mo"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.445em; padding-bottom: 0.593em;">)</span></span><span id="MJXc-Node-11" class="mjx-mo MJXc-space3"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.101em; padding-bottom: 0.298em;">=</span></span><span id="MJXc-Node-12" class="mjx-mi MJXc-space3"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">m</span></span><span id="MJXc-Node-13" class="mjx-texatom"><span id="MJXc-Node-14" class="mjx-mrow"><span id="MJXc-Node-15" class="mjx-msubsup"><span class="mjx-base"><span id="MJXc-Node-16" class="mjx-texatom"><span id="MJXc-Node-17" class="mjx-mrow"><span id="MJXc-Node-18" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">x</span></span></span></span></span><span class="mjx-sup" style="font-size: 70.7%; vertical-align: 0.513em; padding-left: 0px; padding-right: 0.071em;"><span id="MJXc-Node-19" class="mjx-texatom" style=""><span id="MJXc-Node-20" class="mjx-mrow"><span id="MJXc-Node-21" class="mjx-mn"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">4</span></span></span></span></span></span></span></span><span id="MJXc-Node-22" class="mjx-mo MJXc-space2"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.298em; padding-bottom: 0.445em;">+</span></span><span id="MJXc-Node-23" class="mjx-mi MJXc-space2"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">n</span></span><span id="MJXc-Node-24" class="mjx-texatom"><span id="MJXc-Node-25" class="mjx-mrow"><span id="MJXc-Node-26" class="mjx-msubsup"><span class="mjx-base"><span id="MJXc-Node-27" class="mjx-texatom"><span id="MJXc-Node-28" class="mjx-mrow"><span id="MJXc-Node-29" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">x</span></span></span></span></span><span class="mjx-sup" style="font-size: 70.7%; vertical-align: 0.513em; padding-left: 0px; padding-right: 0.071em;"><span id="MJXc-Node-30" class="mjx-texatom" style=""><span id="MJXc-Node-31" class="mjx-mrow"><span id="MJXc-Node-32" class="mjx-mn"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">3</span></span></span></span></span></span></span></span><span id="MJXc-Node-33" class="mjx-mo MJXc-space2"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.298em; padding-bottom: 0.445em;">+</span></span><span id="MJXc-Node-34" class="mjx-mi MJXc-space2"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.495em;">p</span></span><span id="MJXc-Node-35" class="mjx-texatom"><span id="MJXc-Node-36" class="mjx-mrow"><span id="MJXc-Node-37" class="mjx-msubsup"><span class="mjx-base"><span id="MJXc-Node-38" class="mjx-texatom"><span id="MJXc-Node-39" class="mjx-mrow"><span id="MJXc-Node-40" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">x</span></span></span></span></span><span class="mjx-sup" style="font-size: 70.7%; vertical-align: 0.513em; padding-left: 0px; padding-right: 0.071em;"><span id="MJXc-Node-41" class="mjx-texatom" style=""><span id="MJXc-Node-42" class="mjx-mrow"><span id="MJXc-Node-43" class="mjx-mn"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.396em; padding-bottom: 0.347em;">2</span></span></span></span></span></span></span></span><span id="MJXc-Node-44" class="mjx-mo MJXc-space2"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.298em; padding-bottom: 0.445em;">+</span></span><span id="MJXc-Node-45" class="mjx-mi MJXc-space2"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.495em; padding-right: 0.014em;">q</span></span><span id="MJXc-Node-46" class="mjx-mi"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">x</span></span><span id="MJXc-Node-47" class="mjx-mo MJXc-space2"><span class="mjx-char MJXc-TeX-main-R" style="padding-top: 0.298em; padding-bottom: 0.445em;">+</span></span><span id="MJXc-Node-48" class="mjx-mi MJXc-space2"><span class="mjx-char MJXc-TeX-math-I" style="padding-top: 0.199em; padding-bottom: 0.298em;">r</span></span></span></span></span></span></span><script type="math/tex" id="MathJax-Element-1">\Large y=f(x)=m{{x}^{4}}+n{{x}^{3}}+p{{x}^{2}}+qx+r</script> , tro

Cho hàm số $\Large y=f(x)=m{{x}^{4}}+n{{x}^{3}}+p{{x}^{2}}+qx+r$ , tro

4.9/5

Tác giả: Thầy Tùng

Đăng ngày: 19 Aug 2022

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$Hình minh họa Cho hàm số $\Large y=f(x)=m{{x}^{4}}+n{{x}^{3}}+p{{x}^{2}}+qx+r$ , tro$

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Lời giải chi tiết

Câu hỏi:

Cho hàm số $\Large y=f(x)=m{{x}^{4}}+n{{x}^{3}}+p{{x}^{2}}+qx+r$ , trong đó $\Large m,n,p,q,r\in R$ . Biết rằng hàm số $\Large y={f}'(x)$ có đồ thị như hình vẽ bên. Tập nghiệm của phương trình $\Large f(x)=16m+8n+4p+2q+r$ có tất cả bao nhiêu phần tử ?

$Hình câu hỏi 1. Cho hàm số $\Large y=f(x)=m{{x}^{4}}+n{{x}^{3}}+p{{x}^{2}}+qx+r$ , tro$

A.
A. 4
B.
B. 3
C.
C. 5
D.
D. 6

Đáp án án đúng là: A

Lời giải chi tiết:

$Hình đáp án 1. Cho hàm số $\Large y=f(x)=m{{x}^{4}}+n{{x}^{3}}+p{{x}^{2}}+qx+r$ , tro$ $Hình đáp án 2. Cho hàm số $\Large y=f(x)=m{{x}^{4}}+n{{x}^{3}}+p{{x}^{2}}+qx+r$ , tro$

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