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How do you find dy/dx for a set of parametric equations?

Using the chain rule:If the parameter used is 't', differentiate each equation with respect to 't' so that you have answers for dy/dt, and dx/dt.From the chain rule it is known that: "dy/dx=dy/du * du/d...
FC
Answered by Federico C. • Maths tutor
9442 Views

expand and simplify x(3x-2)(x+1)

first expand the brackets (3x-2)(x+1) to get 3x 2 -2x+3x-2, then we can simplify this to get 3x 2 +x-2.Then multiply this by x to get the final answer: 3x 3 +x 2 -2x.
NA
Answered by Natalia A. • Maths tutor
10037 Views

Bananas cost 30p each. Oranges cost 45p each. Write an expression, in pence, for the cost of x bananas and y oranges..

Each banana cost 30p so the total price for bananas will be "number of bananas x 30". Here, bananas are called by the variable x so this number can be written as "30x" and will change dep...
LP
Answered by Léa P. • Maths tutor
5676 Views

Find the Maximum Point of this curve - -X^2 -7X -20

(-7/2,-31/4)
VN
Answered by Vishvan N. • Maths tutor
3700 Views

How to complete the square to find the value of x?

To complete the square you compare your equation in the form x 2 + bx + c = 0 to a similar equation of (x + b/2) 2 + c = 0 . From expanding out the second equation we have x 2 + bx + (b/2) 2 + c = 0 we can s...
AA
Answered by Ayotunde A. • Maths tutor
4048 Views