why in ch- AP an is sometimes written as L ?
perfectstormswift:
It denotes the Last term
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well......
that is beacuse in some question we have to use n as another term expect no. of terms
for ex ;-
Sn = n/2 [ a + L ]
so here n refers to the term till which we want the sum so if we use an so instead of last term we will be writing the term we have to find sum till .....
it looks complicated but if u read it 2-3 times u will understand
that is beacuse in some question we have to use n as another term expect no. of terms
for ex ;-
Sn = n/2 [ a + L ]
so here n refers to the term till which we want the sum so if we use an so instead of last term we will be writing the term we have to find sum till .....
it looks complicated but if u read it 2-3 times u will understand
did u get it
let me read it again
hmmm immpressive ...
oh yea :)
will help u , always
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When We Have To Find Ap Frm Last Term L Is Used
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