Page 84 - DECO403_MATHEMATICS_FOR_ECONOMISTS_ENGLISH

Pavitar Parkash Singh, Lovely Professional University

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<B@=2C1B7=<
=5/@7B6;71 7443@3<B7/B7=<
'C; =4 <47<7B3 (/0:3A
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4B3@ @3/27<5 B67A C<7B ABC23<BA E7:: 03 /0:3 B=
7<2 =5/@7B6;71 7443@3<B7/B7=<
7<2 'C; =4 <47<7B3 (/0:3A
/:1C:/B3 ;>:717B C<1B7=<

6<:7,=+<176
4 G=C <332 B= 27443@3<B7/B3 AC16 4C<1B7=<A 7< E6716 3F>=<3<B 7A /:A= / 4C<1B7=< =4 B6/B D/@7/0:3 /<2
/ 4C<1B7=< B6/B <332A B= 03 27443@3<B7/B32 7A B63 >@=2C1B =@ 27D7A7=< =4 ;/<G 4C<1B7=<A B63< E3 47@AB
<332 B= 47<2 :=5/@7B6; =4 B6=A3 4C<1B7=<A /<2 B63< 27443@3<B7/B3 7B (67A >@=13AA 7A 9<=E< /A :=5/@7B6;71
27443@3<B7/B7=<

7/):1<051+ 1..-:-6<1)<176

3B / 4C<1B7=< =4 03 3?C/: B= (63< 37B63@ B/93 :=5 =4 0=B6 B63 A723A AC16 B6/B B63 3F>=<3<B 7A B63
>@=2C1B =@ AC; 4=@; 3B1

"=E 27443@3<B7/B3 0=B6 A723A E@B /<2 47<2

&3;3;03@ B6/B B= B= 27443@3<B7/B3 B63 4C<1B7=< =4 E@B 4C<1B7=< 7A 274@3<B7/B32 E@B /<2 ;C:B7>:732

E7B6

!

Caution :=5 :=5 :=5

x
x
(63@34=@3 74 B63< y = x + (sin x) cos x then log y ≠ log x + log(sin x) cos x

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