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<h2 class="hd hd-2 unit-title">Overview</h2>
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<h3 class="hd hd-2">Overview</h3>
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<h2 class="hd hd-2 unit-title">Handouts</h2>
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<h3>Lecture slides for Unit 4 are available here:</h3>
<h3>- <a href="/assets/courseware/v1/cf333a404be863a24f997bbb71ab0937/asset-v1:MITx+15.480x+3T2021+type@asset+block/Unit_4b_-_Part_1.pdf" target="_blank">Unit 4, Part 1</a>.</h3>
<h3>- <a href="/assets/courseware/v1/f87dd64715795ef0210806f2ac981ceb/asset-v1:MITx+15.480x+3T2021+type@asset+block/Unit_4b_-_Part_2.pdf" target="_blank">Unit 4, Part 2</a>.</h3>
<h3>- <a href="/assets/courseware/v1/5ef12834e3091c9e69a8ed9e967f3fe3/asset-v1:MITx+15.480x+3T2021+type@asset+block/Unit_4b_-_Part_3.pdf" target="_blank">Unit 4, Part 3</a>.</h3>
<h3>- <a href="/assets/courseware/v1/80ec2bb61aa69ad0164f57ebb31aa75e/asset-v1:MITx+15.480x+3T2021+type@asset+block/Unit_4b_-_Part_4.pdf" target="_blank">Unit 4, Part 4</a>.</h3>
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