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Question : 62 of 160
Marks:
+1,
-0
Solution:
Consider the limit
| cos‌4‌x−4‌cos‌2‌x+3 |
| x4 |
The above limit is solved as,
| cos‌4‌x−4‌cos‌2‌x+3 |
| x4 |
=| −4‌sin‌4‌x+8‌sin‌2‌x |
| 4x3 |
=| −16‌cos‌4‌x+16‌cos‌2‌x |
| 12x2 |
=| 64‌sin‌4‌x−32‌sin‌2‌x |
| 24x |
=| 256‌cos‌4‌x−64‌cos‌2‌x |
| 24 |
Solve further,
| cos‌4‌x−4‌cos‌2‌x+3 |
| x4 |
= = =8
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