Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Mathematics Differential Calculus Evaluation of derivatives

 cos–1x के सापेक्ष cos–1(2x2 – 1)  का अवकलज है: 

1
2
2
\(\rm\frac{−1}{2 \sqrt{1−x^2}}\)
3
\(\rm \frac{2}{x}\)
4
1 − x2
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