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How would you solve the inequality x^2-2x-8 >= 0?

We are looking for all the x values for which this equation holds. We know how to solve quadratic equations without the inequalities, and that is the first step here! So let's forget about the greater than p...
KG
Answered by Kirsty G. • Maths tutor
21014 Views

Intergrate 8x^3 + 6x^(1/2) -5 with respect to x

2x 3 + 4x 3/2 - 5x + cGeneral rule for integration is increase the power by 1 then divide by the new powerAlways remember +C !!!!!!!
TM
Answered by Tia-Marie M. • Maths tutor
3768 Views

f(x)=sin(2x) for 0<x<pi, find the values of x for which f is a decreasing function

A decreasing function means that its instantaneous slope ( rate of change) is negative and the function tends to smaller values of y.There are two approaches to this. One is graphical, as sin(x) is a recogni...
YM
Answered by Yago M. • Maths tutor
3336 Views

Describe prions and their function, give example of prion disease

Prions are certain proteins naturally occuring in organisms that have assumed wrong conformation during folding. This misfolded structure is highly infectious - if it comes into contact with healthy version ...
KN
Answered by Klára N. • Biology tutor
5999 Views

A team of four is chosen from six married couples. If a husband and wife cannot both be on the team, in how many ways can the team be formed?

There are 12 choices for the first memebr, then 10 for the next (as it cannot be the spouse), then 8, then 6.Therefore there are 12 10 8 6 permutations where partners aren't together.However, this counts eve...
LC
Answered by Lily C. • Maths tutor
3270 Views