hi why are some inequalities written separately but some are written as one whole inequality such as at 5:48 (the first 2 questions) also thanks so much for the video
dont know if i need this till but im guessing its becuase the region your are writing about is connected when its less than < and seperated when its greateer than>
I think its because if you write it together, it wouldn't make sense as it would say that x is smaller or equal to -3 and that x is bigger or equal to 4, which would not make any sense if put together. So its better to keep it separate :)
I think yes, because if you write it together, it wouldn't make sense as it would say that x is smaller than -4 and that x is also bigger than -1, which would not make any sense if put together. So its better to keep it separate :)
Sir, I'm sort of confused with these questions. Why don't shade above and below all of it when representing the certain regions of the graph? The '>' sign always has two end parts shaded above and not the middle. The '
If it's less than 0, then it would be under the curve because 0 is the x axis. If it's more than 0, then it would be above the curve. There are different ways of writing this, like: (value)
ok so basically if you look at graph the graph extends beyond -2 and 6 (if the question has > and equal it means that you look at where the line is above he graph and if it is < and equal you look at below graph) therefore no values that are between -2 and 6 so therefore the values must be all values less than and equal to -2 and all values greater and equal to 6
If it's in an n-shape, the inequality will have a negative x squared term. Multiply the whole inequality by - 1 and solve like he did in this video. It will still work. Don't forget to switch the direction of the inequality when you multiply by - 1
No, they're not always equal to zero. But we can manipulate them to equal zero. We have methods to solve quadratic equations WHEN they are equal to zero, so it's important to get them equal to zero.
BrO, it is the night before my maths GCSE and you made me to the biggest OOOOOOOOOHHHHHHHHHH NOW I get it, @emjays9543 yes Below ground Zero properly helped me understand.
