Số phức z thỏa mãn <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-mrow" id="MJXp-Span-3"><span class="MJXp-munderover" id="MJXp-Span-4"><span><span class="MJXp-over"><span class="" style="margin-bottom: -1.17em;"><span class="MJXp-mo" id="MJXp-Span-6" style="margin-left: 0px; margin-right: 0px;">ˉ</span></span><span class=""><span class="MJXp-mi MJXp-italic" id="MJXp-Span-5">z</span></span></span></span></span></span><span class="MJXp-mo" id="MJXp-Span-7" style="margin-left: 0.333em; margin-right: 0.333em;">=</span><span class="MJXp-mo" id="MJXp-Span-8" style="margin-left: 0.267em; margin-right: 0.267em;">−</span><span class="MJXp-mn" id="MJXp-Span-9">3</span><span class="MJXp-mo" id="MJXp-Span-10" style="margin-left: 0.267em; margin-right: 0.267em;">−</span><span class="MJXp-mn" id="MJXp-Span-11">2</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-12">i</span></span></span></span><script type="math/tex" id="MathJax-Element-1">\Large \bar{z}=-3-2 i</script> là <span class="MathJax_Preview" style="color: inherit;"><span class="MJXp-math" id="MJXp-Span-13"><span class="MJXp-mstyle" id="MJXp-Span-14"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-15">z</span><span class="MJXp-mo" id="MJXp-Span-16" style="margin-left: 0.333em; margin-right: 0.333em;">=</span><span class="MJXp-mn" id="MJXp-Span-17">3</span><span class="MJXp-mo" id="MJXp-Span-18" style="margin-left: 0.267em; margin-right: 0.267em;">+</span><span class="MJXp-mn" id="MJXp-Span-19">2</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-20">i</span></span></span></span><script type="math/tex" id="MathJax-Element-2">\Large z=3+2 i</script> $\Large

Số phức z thỏa mãn ˉz=32iz=3+2i $\Large

4.2/5

Tác giả: Thầy Tùng

Đăng ngày: 18 Aug 2022

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Câu hỏi:

Số phức z thỏa mãn ˉz=32i

Đáp án án đúng là: C

Lời giải chi tiết:

Dễ thấy ngay z=ˉz=¯32i=3+2i

Chọn đáp án C