Question

if T(n) is equal to 5n-2 then find S(4)​

Answer 1

\huge\blue{\boxed{\red{\mathfrak{\overbrace{\underbrace{\fcolorbox{red}{aqua}{\underline{\red{✯answer✯}}}}}}}}}



${\underline{ \mathtt{\red{T1=3} \green{}\mathtt\blue{} \purple{} \mathtt \orange{}\pink{}}}}\:$

${\underline{ \mathtt{\red{} \green{}\mathtt\blue{T2=8} \purple{} \mathtt \orange{}\pink{}}}}\:$

${\underline{ \mathtt{\red{} \green{}\mathtt\blue{} \purple{T3=13} \mathtt \orange{}\pink{}}}}\:$

${\underline{ \mathtt{\red{} \green{}\mathtt\blue{} \purple{} \mathtt \orange{}\pink{3+8+13+..........is-in-A. P}}}}\:$

${\underline{ \mathtt{\red{} \green{}\mathtt\blue{} \purple{a=3,d=5} \mathtt \orange{}\pink{}}}}\:$

${\underline{ \mathtt{\red{} \green{}\mathtt\blue{} \purple{} \mathtt \orange{}\pink{S4=4/2[6+3(5)]=42}}}}\:$

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