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[Senior One Mathematics] Can this formula be worked out directly? Seeking process and explanation
The formula is not easy to type, just describe it directly.

When the numerator denominator of a real number is multiplied by the x power of 4 at the same time, the numerator becomes the x power of: 1+4, and the denominator becomes the x power of: 4 times (the x power of 1+4), so the numerator denominator can be simplified to the x power of 1+4.

In this way, the numerator becomes 1, the denominator is the x power of 4, and the x power of 1/4 = the -X power of 4, that is, the real number becomes the -x power of 4, and the logarithm is exactly the base of 4, so the result is-X.