A-Level Maths: G3-10 [Gradients: Where Functions are Increasing and Decreasing]

[Aya-kjct]

thank you so much you are saving us students going to upper sixth with months of self taught curriculum. best teacher!

[imma_eatjin]

you explain it all the complicated things so simply😭thank you!!

[zynex]

No clue what I'm reading in the book then I open one of your vids and everything just makes sense 😅

[Sam-odhv]

You are an absolute life saver, wish I could have you as my maths teacher you’re 50x better than mine and thank you for your amazing videos 👍

[hindalmulla]

Thank you so much for this helpful video, you teach and explain better than my teacher, my teacher explains for 1 hour and I don't understand, but you just in 7 min you made everything clear, so thankful 😄♥️🍀

[lunaxzo]

0:58 so when u divided both sides by -2, why did x become smaller than -5/2 instead of greater than?

[AceOfHearts]

Very nice.
But was actually looking for some explenations of strictly and non strictly increasing and decreasing functions.

[Ditto.]

how do you know if the graph is u shaped or n shaped?

[charliemcgee]

Just one question, My teacher taught me that dy/dx could be greater than or equal to 0 for an increasing function is that false?

[CWL_Wing]

There is a line in my textbook:
If f'(x) is equals or greater than 0 for all x in (a, b), then f(x) is increasing on [a, b]
Would you please explain this to me? I am so confused. How can f'(x) be greater than 0?

[johnsungunlee]

thank u so much sir! i really needed this!

[chronicsnail]

Does doing a negative operation in a inequality change it, I think I have heard this before but dont understand why

[helenaa]

How is -2x-5 a curved graph when it is in the form y=mx+b?

[misan]

how would I prove a function is decreasing