The value of du becomes 4 by integration.
According to the statement
we have given a two statement which are u - 4x and  u = x + 1.
And we have to find the value of du by the use of integration.
An Integral assigns numbers to functions in a way that describes the data.
So,
From u  - 4x
here du becomes by derivative
du - 4dx/du
du = 4dx/du. Â -(1)
And in u = x + 1.
here du becomes
du = dx/du  -(2)
by comparing both terms from equation (1) and (2) we get the value of du
du = 4.
the value of du is 4.
So, The value of du becomes 4 by integration.
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