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y=4x/(x^2+5)

Find dy/dx

Remember quotient rule dy/dx=(u'v-v'u)/v^2

u=4x       u'=4

v=x^2+5         v'=2x

dy/dx=(20-4x^2)/(x^2+5)^2 (simplified)

JS
Answered by Jeppe S. Maths tutor
5878 Views

What is the indefinite integral ∫5exp(3-4x)dx ?

∫ 5e3-4x dx=5∫ee-4x dx=5e∫e-4x d=5e[(-1/4)e-4x ]=-(5/4)e3e-4x =-(5/4)e3-4x...

AM
Answered by Alexandros M. Maths tutor
5857 Views

Find the 16th term in the following sequence: 3, 5, 7, 9, 11

First find the nth term of the sequence. Start by finding the difference between each term:

3, 5, 7, 9, 11 - the difference between each is 2 therefore it is 2n but this alone gives the sequence: 2...

KS
Answered by Kate S. Maths tutor
11145 Views

The mass, m grams, of a substance is increasing exponentially so that the mass at time t hours is m=250e^(0.021t). Find the time taken for the mass to double in value.

All exponential equations can be reduced to the form m=m0ekt, where m0 is the initial mass. This means for our equation the initial mass is 250g. If the mass has doubled i...

TJ
Answered by Tom J. Maths tutor
7829 Views

How can I determine the stationary points of a curve and their nature?

For example, y = 3x3 + 9x2 + 2. Determine the stationary points and their nature.

Let's remind ourselves what a stationary point is, and what is meant by the ...

TD
Answered by Tutor87017 D. Maths tutor
140148 Views

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