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Find the equation of the tangent to: y = X^2 + 3x + 2 at the point (2,12)

(1) Find the gradient using differentiation (2) If the gradient at (x1,y1) is m,y - y1 = m(x - x1)
(1) We differentiate the given equation:dy/dx = 2x + 3 <...

Answered by Samuel C. Maths tutor
3657 Views

Divide £700 in the ratio 5:3:2

The total number of 'parts' in this ratio is 5+3+2 = 10.

So, to work out how much of the total corresponds to 1 part, we need to divide the t...

Answered by Rohan B. Maths tutor
37173 Views

Quadratic equation

  I have choose a quadratic equation as a common question . This is for both GCSE & A-level student. (2x)^2-x-1=0
To solve this equation we have four methods:- Factoring Completing square Quadrat...

Answered by Muhammed Asim W. Maths tutor
2628 Views

A voucher takes 12% off a bill at a restaurant. After using the voucher, the bill for a meal is £31.68. How much was the bill before using the voucher?

The best way to tackle this sort of worded problem is to create a solvable equation. Lets call the bill before the voucher was used, X. So, the price after the voucher was applied is: = X...

Answered by Rohan B. Maths tutor
3592 Views

Given the equation 0=5x^2+3xy-y^3 find the value of dy/dx at the point (-2,2)

To answer this we will use implicit differentiation with respect to x. So start by differentiating each term. On the left hand side 0 differentiates to 0. On the right hand side 5x2 differentia...

Answered by Holly W. Maths tutor
3178 Views

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