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```
Let f(x) + f(y) = f (x √ (1-y 2 ) + y √ (1-x 2 ) ) . Find the value of f (4x 3 – 3x ) + 3f(x) .

```
8 years ago

Chetan Mandayam Nayakar
312 Points
```							f(x)=sin-1(x),f(y)=sin-1(y), and so on...
3f(x)=3sin-1(x)
f(4x3-3x)=f(cos(3cos-1(x)))
```
8 years ago
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### Course Features

• 51 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions