If the 3N power of 3|4 = the n-4 power of 4|3, then the value of n is?

If the 3N power of 3|4 = the n-4 power of 4|3, then the value of n is?

Because, 3N power of 3|4 = n-4 power of 4|3
So, (3 / 4) ^ 3N = [(3 / 4) ^ (- 1)] ^ (n-4)
(3/4)^3N=(3/4)^4-N
So, 3N = 4-N
So, n = 1

Find the extreme value of the function in the interval, y = ln (x ^ 2 + X + 1), X ∈ [0,1]

What you want is the extreme value, not the maximum value?
Let y '= (2x + 1) / (X & # 178; + X + 1) = 0, then x = - 1 / 2
∵ - 1 / 2 does not belong to [0,1]
There is no extremum on [0,1]

Finding the extremum of function y = ln (x square + 1)
I'm sorry, the 2 above the square of X can't be typed out, so I have to use Chinese instead

The zero point of 2x / (x ^ 2 + 1) is at x = 0
So x = 0 is the extremum, 0
(you can see it at a glance)

Finding the extreme value of binary function: z = x * 2 + y * 2
X * 2 is the square of X

Find the reciprocal of Z:
The partial reciprocal of Z with respect to X is: 2x
The partial reciprocal of Z with respect to y is 2Y
From 2x = 2Y = 0
x=y=0
According to its positive definite Hessian matrix, we can know that it is a minimum point
Is the middle multiplied or squared?
If it's a ride:
The partial reciprocal of Z with respect to X is: X
The partial reciprocal of Z with respect to y is: y
From x = y = 0
x=y=0
Its Hessian matrix is indefinite, so there is no extremum