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Differentiate the equation: 3x^2 + 4x + 3

3x 2 + 4x + 3 = 6x + 4
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Answered by Kasam A. • Maths tutor
1849 Views

If f(x) = 1/(6x^2), where x not equal to 0, find the rate of change when x=4.

f(x) can be rearranged to be: f(x) = 1/6 x -2 This is then differentiated to be: f'(x) = -1/3 x -3 as the expression is multiplied by the original power (-2) and then the power is reduced by 1 (to -3) f'(x) ...
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Answered by Thomas R. • Maths tutor
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Find the gradient of the straight line with equation 4x+3y=12

To answer the question the equation given must be rearranged into the straight line formula, y=mx+c, where m is the gradient of the slopeminus 4x from both sides, we now have 3y=12-4xthen divide through by 3...
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Answered by Constance N. • Maths tutor
10319 Views

what is 87% of 654

First, lets find 1%. TO do this, divide 654 by 100. This is because 654 is 100%, so 654/100 is 100/100% = 1%. Now that we have 1%, multiply this by 87 to find out what is 87%.
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Answered by Nikita Z. • Maths tutor
1255 Views

a) Factorise: 2x^2-72, and hence b) find the y-intercept of the line with the equation: y=(2x^2-72)/(4x-24)

a) Take out the common factor, giving: 2(x 2 -36), idenitfy the difference of two squares and factoise accordingly, giving: 2(x-6)(x+6) b) you have the facotirse version of the top of the fraction from part ...
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Answered by Innis S. • Maths tutor
1725 Views