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How to find the derivative of sqrt(x) from first principles?

Graphical explanation leading to the expression that we need to develop (Lim(a->0) (sqrt(x+a) - sqrt(a))/(a). Then we need to understand how to rearrange a fraction involving square roots (multiplicati...

OD
Answered by Olivier D. Maths tutor
1606 Views

How do you find the tangent of an angle in a right-angled triangle?

Divide the length of the opposite side by the length of the adjacent side

LW
Answered by Lydia W. Maths tutor
3014 Views

What is Kirchoff's first law?

The sum of multiple currents going into a junction equals the sum of the currents leaving it. I1 + I2 = I3

LW
Answered by Lydia W. Physics tutor
1802 Views

Name the first stage of respiration. How many net ATP molecules are produced?

Glycolysis - 2 ATPs (net) are produced. 2 are input into the reaction and 4 are produced as a result.

LW
Answered by Lydia W. Biology tutor
2430 Views

How to work out a fraction of an amount?

The key rule is to divide the amount by the denominator and multiply by the nominator. E.g:

3/5 of 45£

divide by the denominator 45/5=9

multiply by the nominator  9*3=27

AB
Answered by Augustina B. Maths tutor
2819 Views

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