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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to ask for help with a Math problem?

49 replies

FluffyGoalXXXDX · 10/03/2020 17:11

DS is doing a distance learning Maths A-Level. He has been staring at this maths problem for the past few hours, unable to make sense of it. He has the answer but can't work out how the problem is to be solved. I have attached a photo of the Maths problem.

Can anyone throw any light on how this Maths problem can be solved?

Thanks in advance for any ideas!

AIBU to ask for help with a Math problem?
OP posts:
IndigoHexagon · 10/03/2020 17:21

I think setting fire to it would be a good start.

formerbabe · 10/03/2020 17:24

I clicked on this thread as I thought I was pretty good at maths. Clearly not.

Good luck op!

GreenTulips · 10/03/2020 17:25

Type it in google

BowermansNose · 10/03/2020 17:27

I think you’re missing the question. There must be something more surely?

lanthanum · 10/03/2020 17:30

Has he been asked to plot/sketch the function?

TeenPlusTwenties · 10/03/2020 17:31

There must be more to this question. Is there an instruction above it? It looks like this is question (h) so is there an instruction above (a)..(g)?

LizzieMacQueen · 10/03/2020 17:32

So this is (h) in a series of (x,y), so what is the question?

FluffyGoalXXXDX · 10/03/2020 17:43

Forgot to say he needs to convert it into a Cartesian equation and write the new ranges for X and y

OP posts:
StillDisappointed · 10/03/2020 17:45

I consider myself intelligent and am currently training to be a pharmacist, but that question? Shock

I agree with PP, set it alight and pretend it never existed.

TorysSuckRevokeArticle50 · 10/03/2020 17:45

Would this converter tool help www.symbolab.com/solver/cartesian-calculator

StrawberryPi · 10/03/2020 17:46

Ah ok! So he needs to rearrange both the equations into the form theta=....

Then he can equate the two and rearrange to get y=.....

Then he can sub theta into the original equation to get the range

Canoo · 10/03/2020 17:57

Rearrange to get cos theta = x-1 and sin theta = y- 3
Then square both and add together. Use the fact that sin squared plus cos squared equals 1
1 = (x-1)2 + (y-3)2

themarkofthemaker · 10/03/2020 18:05

that's a bog standard question, should be numerous similar examples in his textbook to practice on

FluffyGoalXXXDX · 10/03/2020 18:06

Thank you all so much for your inputs.

@TorysSuckRevokeArticle50 Thank you for that link. DS is off to check it out.

@StrawberryPi Thank you so much for that. DS is looking at your advice now. He thinks that he had tackled the problem in the method you have described. However, the answer he gets when he does it is not the answer given as the correct one in his learning materials. He has asked me if I can ask you what answer you would calculate for this question. He is wondering if the answer he has been given in his learning materials could be incorrect.

OP posts:
FluffyGoalXXXDX · 10/03/2020 18:07

Canoo Thank you! I will show him your post!

OP posts:
Gatekeeper · 10/03/2020 18:09

my long-standing nightmare has come true...I can no longer understand English...

FluffyGoalXXXDX · 10/03/2020 18:14

Gatekeeper Grin

OP posts:
runninguphills · 10/03/2020 18:15

Gosh that question is scary.

I did maths A level 30 years ago and spend a lot of my working life in data analysis so thought I would be able to help.

Clearly not.

FluffyGoalXXXDX · 10/03/2020 18:19

runninguphills It's completely undecipherable to me!

OP posts:
Rosspoldarkssaddle · 10/03/2020 18:23

32

ForFiveMinutes · 10/03/2020 18:30

Canoo I agree with you, it is a standard equation of a circle question, centre (1,3) radius 1.

Allaboardthemagicbus2020 · 10/03/2020 18:38

So what is the answer?

strawberrylipgloss · 10/03/2020 18:44

Canoo posted it 46 mins ago

Allaboardthemagicbus2020 · 10/03/2020 18:50

Yep, I can’t follow.

#schoolflashback

hoxtonbabe · 10/03/2020 19:34

I look at my sons Y7 maths now and I cry.. I knew my brain would go into meltdown once I clicked on the pic Grin