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Maths
A Level

Find the derivative of the function f:(0,oo)->R, f(x)=x^x.

The domain of the function allows us to write f(x)=xx  as f(x)=eln(x^x)=ex ln(x) (since ln(x) is defined on (0,oo) only). Using the standard derivati...

AR
Answered by Andrei R. Maths tutor
2891 Views

differentiate 4x^3 + 3x

12x^2 +3

DH
Answered by David H. Maths tutor
3991 Views

Find the first 4 term of the binomial expansion (2-4x)^5

Step 1: Look at formula in formula booklet provided and write out formula.

Formula: (a+b)n= annc1an-1b + nC2an-1<...

CR
Answered by Charlie R. Maths tutor
4392 Views

find the exact solution to the following equation: ln(x) + ln(3) = ln(6)

My first step would be to put all the known values on one side: ln(x) = ln(6) - ln(3) Then, using log laws, we have: ln(x) = ln(6/3) so, ln(x) = ln(2) so, x = 2

RC
Answered by Rhianna C. Maths tutor
8698 Views

Show that cosec(2x) + cot(2x) = cot(x)

cosec(2x) + cot(2x)

CONVERT ALL COSEC/COT/SEC FUNCTIONS INTO FUNCTIONS USING SIN/TAN/COS

= 1 / (sin2x) + cos(2x) / sin(2x)

COMBINE THE TWO FRACTIONS INTO ONE

= [1...

DK
Answered by Divya K. Maths tutor
67966 Views

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