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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...

Answered by Sinead O. • Maths tutor

6420 Views

A curve has equation y = 20x −x^2 −2x^3 . Find its stationary point(s).

Differentiate the equation.Let the derivative equal to 0 and get x.Substitute the value of x into the original equation to get y.

Answered by Ruonan L. • Maths tutor

5302 Views

f(x) = 2x3 – 5x2 + ax + 18 where a is a constant. Given that (x – 3) is a factor of f(x), (a) show that a = – 9 (2) (b) factorise f(x) completely. (4) Given that g(y) = 2(33y ) – 5(32y ) – 9(3y ) + 18 (c) find the values of y that satisfy g(y) = 0, givi

a) 54-45+3a+18=0 3a+27=0 3a=-27 and thus a=-9b) 2x^3 – 5x^2 -9x + 18 = (x-3) (2x^2 +bx-6)to find b ; collect the x^2 terms so bx^2-6x^2=-5x^2 and thus b=1c) when comparing f(y) and f(x) we see ...

Answered by Akrit K. • Maths tutor

8812 Views

How do I plan an essay effectively?

Read the question carefully, you might want to underline or highlight key words so as to ensure you keep these in mind when planning. You will need to consider which textual material to draw upon and what...

Answered by Miranda V. • English Literature tutor

3886 Views