can't you write x^2 as sin^2x for the rightmost term which would then result in a common denominator, the 1s in the numerator cancel out and then you have 3x^2/sin^2x which is 3 when x tends to zero.
This approach also leads to a similar mistake as shown in the first part of the video. The expression needs careful handling as \( x^2 \) and \( \sin^2x \) are not exactly interchangeable for simplification here.
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can't you write x^2 as sin^2x for the rightmost term which would then result in a common denominator, the 1s in the numerator cancel out and then you have 3x^2/sin^2x which is 3 when x tends to zero.
This approach also leads to a similar mistake as shown in the first part of the video. The expression needs careful handling as \( x^2 \) and \( \sin^2x \) are not exactly interchangeable for simplification here.