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Find the values of x where the curve y = 8 -4x-2x^2 crosses the x-axis.

A curve crosses the x-axis when y=0, if we put that into the equation above we get the quadratic equation 0=8-4x-2x 2 . The solutions to this equation are the values of x where y=0, which is the same as sayi...
HW
Answered by Hannah W. • Maths tutor
8067 Views

A stone, of mass m, falls vertically downwards under gravity through still water. At time t, the stone has speed v and it experiences a resistance force of magnitude lmv, where l is a constant.

A stone, of mass m, falls vertically downwards under gravity through still water. At time t, the stone has speed v and it experiences a resistance force of magnitude lmv, where l is a constant. QUESTION: a. ...
RH
Answered by Ronan H. • Maths tutor
5520 Views

I don't understand chain rule for differentiation especially when combined with more complex functions.

The chain rule is a method that allows you to differentiate a function of a function, which can be of the form y = f[g(x)]. That is, g is a function of x and f is a function of g, which in turn is a function...
AS
Answered by Adamos S. • Maths tutor
8436 Views

Find the values of y such that log2(11y-3)-log2(3)-2log2(​y) = 1

Find the values of y such that log 2 (11y-3)-log 2 3-2log 2 y = 1 Power law: 2log 2 y = log 2 y 2 Product law: log 2 (11y-3) - log 2 3 - log 2 y2 = log 2 (11y-3) - log 2 (3y 2 ) Quotient law: log 2 (11y-3) -...
JP
Answered by Joe P. • Maths tutor
17633 Views

How do you differentiate this

In differentaition, it is all about multiplying and taking away. Look at the first integer and the number that it is in the power off. You have to simply times the integer with the power of number and then d...
MD
Answered by Meghna D. • Maths tutor
3559 Views