<h2 class="f3" id="worked-examples">Worked Examples:<a class='anchor' href='#worked-examples' aria-label="Permalink to Worked Examples:" role="complementary" aria-hidden="true">#</a></h2>To be able to multiply columns of the first must match rows of the 2nd. <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_819B9FB3-2E61-42DB-9854-4401A3A51FFF/public" style="background-color:#FEFEFE;max-width:min(100%,879px);max-height:min(376px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_819B9FB3-2E61-42DB-9854-4401A3A51FFF/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="879" height="376"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_44BECD40-2ACA-4C6B-B22C-64119F1E9031/public" style="background-color:initial;max-width:min(100%,1536px);max-height:min(1010px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_44BECD40-2ACA-4C6B-B22C-64119F1E9031/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="1536" height="1010"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_C895006F-B446-4FDB-A9FA-7BE392186644/public" style="background-color:#FFFFFF;max-width:min(100%,890px);max-height:min(389px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_C895006F-B446-4FDB-A9FA-7BE392186644/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="890" height="389"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_59304E9D-6BD6-4551-97F9-28C6CEC7C0ED/public" style="background-color:initial;max-width:min(100%,1536px);max-height:min(1096px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_59304E9D-6BD6-4551-97F9-28C6CEC7C0ED/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="1536" height="1096"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_B8BB7886-2085-48A8-891A-CB4CEE6C9C71/public" style="background-color:#FFFFFF;max-width:min(100%,842px);max-height:min(414px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_B8BB7886-2085-48A8-891A-CB4CEE6C9C71/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="842" height="414"> <img src="https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_255319E9-989E-4D1A-BDF1-A61CEF0812F7/public" style="background-color:initial;max-width:min(100%,1536px);max-height:min(464px);;background-image:url(https://imagedelivery.net/phxEHgsq3j8gSnfNAJVJSQ/NODE2_255319E9-989E-4D1A-BDF1-A61CEF0812F7/public);height:auto;width:100%;object-fit:cover;background-size:cover;display:block;" width="1536" height="464"> <a class='tag' href="/tags/GraphsFunctionsAndSystems">#GraphsFunctionsAndSystems</a>