Page 86 - DECO403_MATHEMATICS_FOR_ECONOMISTS_HINDI

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x 3

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a
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x e 2x 2 x
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x x 2
1 2 1

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' log a + + log e
e
10
x x x
1
- − 2x − 9/7 + log e ;

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1 1
log e + a x log a − a − x log a + 1 log e
e
a
x 2x e x a
3-11 nks iQyuksa osQ HkkxiQy dk vody&xq.kkad

3
$
/)
f 1 () f 1 (x + ) h
x
eku yks : rks ; , :
f 2 () x f 2 (x + ) h
x
f 1 (x + ) h f 1 ( )
d f (x + ) h − f ( ) x
∴ : lim 2 2
dx h→ 0 h
x
( ) f
x
: lim 0 f 1 (x + ) h f 2 2 ( ) − (x + h f 1 ) ( ) 2 (x + ) h
h→
x
hf
f
2