高中數學主題練習—遞迴式求一般項

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               padding: 1px 0.25rem;                font-family: Menlo, Consolas, Monaco, monospace;                font-size: 94%;              }            </style></head><body><div class="article-container"><div class="graf--img center"><div class="lexical__imageWrapper"><img src="https://images.vocus.cc/a530a8a3-555b-454e-ae36-d4cc85a82aff.png" data-src="https://resize-image.vocus.cc/resize?compression=6&norotation=true&url=https%3A%2F%2Fimages.vocus.cc%2Fa530a8a3-555b-454e-ae36-d4cc85a82aff.png&width=740&sign=LAlYymsESu9CXk-cioNcmVmqAaf26vM7ubJT-rt6QbI" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/a530a8a3-555b-454e-ae36-d4cc85a82aff.png" data-lowquality="false" data-width="1454" data-height="1554" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="false" alt="raw-image"></div><div></div></div><div class="graf--img center"><div class="lexical__imageWrapper"><img src="https://images.vocus.cc/c38658be-e643-412b-bb2d-f0df3e5ef690.png" data-src="https://resize-image.vocus.cc/resize?compression=6&norotation=true&url=https%3A%2F%2Fimages.vocus.cc%2Fc38658be-e643-412b-bb2d-f0df3e5ef690.png&width=740&sign=9433YdGXan7wzxqZTlSrOW9OUiPeIfM9KFqzzxMyaqY" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/c38658be-e643-412b-bb2d-f0df3e5ef690.png" data-lowquality="false" data-width="1360" data-height="1712" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="false" alt="raw-image"></div><div></div></div><p class="graf--p"><br></p><hr><h2 class="graf--h2" dir="ltr"><b><strong class="lexical__textBold" style="white-space: pre-wrap;">解答：</strong></b></h2><div class="graf--img center"><div class="lexical__imageWrapper"><img src="https://images.vocus.cc/7515fb8a-6b06-4835-b973-ab8b972ea9a0.png" data-src="https://resize-image.vocus.cc/resize?compression=6&norotation=true&url=https%3A%2F%2Fimages.vocus.cc%2F7515fb8a-6b06-4835-b973-ab8b972ea9a0.png&width=620&sign=bg2HWkoOJP5sICharbU5vpx8H5wAC3vngN7uC1fbUYU" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/7515fb8a-6b06-4835-b973-ab8b972ea9a0.png" data-lowquality="false" data-width="620" data-height="1346" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="false" alt="raw-image"></div><div></div></div><div class="graf--img center"><div class="lexical__imageWrapper"><img src="https://images.vocus.cc/a2823f7b-269e-49c0-91c8-92b9788084a4.png" data-src="https://resize-image.vocus.cc/resize?compression=6&norotation=true&url=https%3A%2F%2Fimages.vocus.cc%2Fa2823f7b-269e-49c0-91c8-92b9788084a4.png&width=620&sign=o_Ke3Z-pVdEYRLYgwrTwI4fn--XVvaUo9XtXcelxvK4" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/a2823f7b-269e-49c0-91c8-92b9788084a4.png" data-lowquality="false" data-width="620" data-height="1694" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="false" alt="raw-image"></div><div></div></div><p class="graf--p"><br></p><p class="graf--p" dir="ltr"><br></p></div></body></html>

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遞迴式求一般項（一）

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遞迴式求一般項（二）

<div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fa530a8a3-555b-454e-ae36-d4cc85a82aff.png&amp;width=740&amp;sign=LAlYymsESu9CXk-cioNcmVmqAaf26vM7ubJT-rt6QbI" fetchpriority="high" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fa530a8a3-555b-454e-ae36-d4cc85a82aff.png&amp;width=740&amp;sign=LAlYymsESu9CXk-cioNcmVmqAaf26vM7ubJT-rt6QbI" data-loaded="true" data-original-src="https://images.vocus.cc/a530a8a3-555b-454e-ae36-d4cc85a82aff.png" data-lowquality="false" data-width="1454" data-height="1554" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="true" alt="raw-image"></div><div></div></div><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fc38658be-e643-412b-bb2d-f0df3e5ef690.png&amp;width=740&amp;sign=9433YdGXan7wzxqZTlSrOW9OUiPeIfM9KFqzzxMyaqY" fetchpriority="high" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fc38658be-e643-412b-bb2d-f0df3e5ef690.png&amp;width=740&amp;sign=9433YdGXan7wzxqZTlSrOW9OUiPeIfM9KFqzzxMyaqY" data-loaded="true" data-original-src="https://images.vocus.cc/c38658be-e643-412b-bb2d-f0df3e5ef690.png" data-lowquality="false" data-width="1360" data-height="1712" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="true" alt="raw-image"></div><div></div></div><p class="lexical__paragraph"><br></p><hr><h2 class="lexical__h2" dir="ltr"><b><strong class="lexical__textBold" style="white-space: pre-wrap;">解答：</strong></b></h2><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F7515fb8a-6b06-4835-b973-ab8b972ea9a0.png&amp;width=620&amp;sign=bg2HWkoOJP5sICharbU5vpx8H5wAC3vngN7uC1fbUYU" fetchpriority="high" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2F7515fb8a-6b06-4835-b973-ab8b972ea9a0.png&amp;width=620&amp;sign=bg2HWkoOJP5sICharbU5vpx8H5wAC3vngN7uC1fbUYU" data-loaded="true" data-original-src="https://images.vocus.cc/7515fb8a-6b06-4835-b973-ab8b972ea9a0.png" data-lowquality="false" data-width="620" data-height="1346" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="true" alt="raw-image"></div><div></div></div><div class="lexical__image center"><div class="lexical__imageWrapper"><img src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fa2823f7b-269e-49c0-91c8-92b9788084a4.png&amp;width=620&amp;sign=o_Ke3Z-pVdEYRLYgwrTwI4fn--XVvaUo9XtXcelxvK4" data-src="https://resize-image.vocus.cc/resize?compression=6&amp;norotation=true&amp;url=https%3A%2F%2Fimages.vocus.cc%2Fa2823f7b-269e-49c0-91c8-92b9788084a4.png&amp;width=620&amp;sign=o_Ke3Z-pVdEYRLYgwrTwI4fn--XVvaUo9XtXcelxvK4" class="lazy" data-loaded="false" data-original-src="https://images.vocus.cc/a2823f7b-269e-49c0-91c8-92b9788084a4.png" data-lowquality="true" data-width="620" data-height="1694" data-retry="0" onerror="Number(this.dataset.retry) > 4 ? this.src='/static/default-error-img.svg': (() => {this.src=this.dataset.originalSrc; this.dataset.retry = Number(this.dataset.retry)+1;})()" data-istopthreeimage="false" alt="raw-image"></div><div></div></div><p class="lexical__paragraph"><br></p><p class="lexical__paragraph" dir="ltr"><div class="ad-placeholder" style="min-height: 124px;"></div><br></p>