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Find the coordinates of the minimum or maximum of the function f(x) = 3x^2 -2x +9 and determine if it's a minimum or maximum.

To find the minimum or maximum we need to find a point on the function where its slope is zero. So, we differentiate f(x) and set it equal to zero: f'(x)=0, f'(x) = 6x -2 = 0, x=1/3 Substitute into f(x) t...

LB
Answered by Lilla B. Maths tutor
1543 Views

Describe the role of tRNA in the production of a protein

tRNA molecules transport a specific amino acid to a ribosome for translation of mRNA. A tRNA molecule carries an anti-codon (at the opposite end of the amino acid) that pairs wi...

MW
Answered by Megan W. Biology tutor
7498 Views

Find Dy/Dx of (x^2+4x)^3

So here we need to use the chain rule in order to differentiate the equation. To start you take the function inside the bracket x2+4x and differentiate it to Du/Dx= 2x + 4 this is known as u. d...

SO
Answered by Sam O. Maths tutor
3138 Views

Lily goes on a car journey. For the first 30 min. her average speed is 40 mph. She then stops for 15 min. She then completes the journey at an average speed of 60 mph. The total journey time is 1 h. What is her overall average speed?

average speed=total distance/time taken ; distance=speed x timeFor the first part of her motion the distance she travelled, d1=40 x 1/2 (as 30 minutes represent half an hour), so d1=...

SJ
7391 Views

How the 'Wizard of Oz' Film Influenced Fashion

The “The Wizard of Oz” has had a large influence on fashion, both in design and in photos. Just look at Vogue’s December 2005 photo shoot taken by famed photographer, Annie Leibovitz. It features actress ...

EB
2819 Views

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