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Maths
A Level

(a) By using a suitable trigonometrical identity, solve the equation tan(2x-π/6)^2 =11-sec(2x-π/6)giving all values of x in radians to two decimal places in the interval 0<=x <=π .

say (2x-π/6)=qtan2q = sec2q-1so sec2q-1= 11 - sec q sec2q + sec q -12 = 0(sec q -3) (sec q + 4) = 0sec q = 3 or -4because 0<=x<= πso -π/6 <= q <= 11...

ZZ
Answered by Zhaohui Z. Maths tutor
8251 Views

Solve ln(2x-3) = 1

eln(2x-3) = e1
2x-3 = e
x = (e+3)/2

JC
Answered by Jonathan C. Maths tutor
5136 Views

Find all solutions to the trig equation 2sin(x)^2 + 3sin(x) - 2 = 0 in the range 0 <= x <= 360 degrees

Assuming knowledge of solving regular quadratic equations.Treat this as a regular quadratic equation, except it is in terms of sin(x) instead of just x as you might be used to.So using the quadratic equat...

TM
Answered by Toby M. Maths tutor
4009 Views

Differentiate the equation y^2 + y = x^3 + 2x

To answer this question you must use implicit differentiation due to there being both x and y terms. Consequently you must differentiate each term individually as you would usually (by multiplying by the ...

DW
Answered by Daisy W. Maths tutor
2971 Views

solve the simultaneous equation; x^2+y^2=10 2x+y=5

When dealing with a linear and quadratic simultaneous equation, it is best to use subsitution to approach it.I take the linear equation and put it in terms of one variable. In this case, to avoid fraction...

SO
Answered by Sinead O. Maths tutor
5565 Views

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