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Direct proof

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Simple, easy to understand math videos aimed at High School students. Want more videos? I've mapped hundreds of my videos to the Australian senior curriculum at my website mathsvideosaust...

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5 сен 2024

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Комментарии : 12

@seyedali7990 3 месяца назад

Bro was not cooking in the last question

@notericok7695 4 года назад

The only video that I could understand fully about direct proofs. Thanks

@mrcute4584 2 года назад

that doesn't imply that 2 of them are + numbers. inside of the parentheses could be negative and its square would be positive ..

@isaacbell1292 2 года назад

thx browski, this banger definitley made me pass math this term

@sebbretro 2 года назад

Hi, I am a bit confused with you assumption on the last example, as y could be negative and still allow the answer to be greater than 0

@tmac4849 Год назад

They could possibly both be negative numbers and still give an answer >= 0. Eg If x=-3 and y=-1.

@HSJM-tr3pi Год назад

just seeing the comment now, he does say that in the question, both x and y are positive real numbers

@Sonya-lj3ms 3 года назад

I appreciate this a lot thanks heap!!

@mrcute4584 2 года назад

i didnt understand the last one

@chrischristensen5755 4 года назад

so how are we supposed to solve the last one? you did not explain that very well at all

@JoelSperanzaMath 4 года назад

Sorry it wasn't clear Chris. In that last question. To prove that last question, you just reverse the order in which I wrote my working. A false proof, is just a direct proof written backwards.

@tmac4849 Год назад

That doesn't work because your last statement does not equal P