Find the indicated terms in each of the sequences whose nth terms are: contexto.140 3 years ago Given, term of the grouping is On substituting , we get
![\[{{n}^{th}}~\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-94ff6492f998b14d394d45bd97b4c7f7_l3.png "Rendered by QuickLaTeX.com")
![\[{{a}_{n}}~=\text{ }{{\left( -1 \right)}^{n-1}}~{{n}^{3}}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-c93e06507368d60b2557c4c0d5c52d48_l3.png "Rendered by QuickLaTeX.com")
![\[n~=\text{ }9\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-ef1f51cf2c944f5119f3c2a3ad530ba6_l3.png "Rendered by QuickLaTeX.com")
![\[{{a}_{9}}~=\text{ }{{\left( -1 \right)}^{9-1}}~{{\left( 9 \right)}^{3}}~=\text{ }1\text{ }x\text{ }729\text{ }=\text{ }729\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-36d235285a689496564d440a061620e7_l3.png "Rendered by QuickLaTeX.com")
![\[{{\mathbf{a}}_{\mathbf{n}}}~=\text{ }{{\left( -\mathbf{1} \right)}^{\mathbf{n}-\mathbf{1}}}~{{\mathbf{n}}^{\mathbf{3}}};\text{ }{{\mathbf{a}}_{\mathbf{9}}}\]](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-64d5c82c77645377e62289f2988bb139_l3.png "Rendered by QuickLaTeX.com")
