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If T_n = 2n^2 + 5 then find T_3

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If $T_{n} = 2 n^{2} + 5$ then find $T_{3}$

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Mila Discussed

T_{n} = 2 n^{2} + 5

then find

T_{3}

6 mins ago

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Text solutionVerified

Solution:

T_{n} = 2 n^{2} + 5

or,

T_{3} = 2 \times 3^{2} + 5

= 2 \times 9 + 5

= 18 + 5

= 23

∴ T_{3} = 23.

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