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Mathematics Clinic / 2015 Cowbell Mathematics Champion, Akinkuowo Honoured By School. / Lead City University Clinic Welcomes First Ever Baby Since 10 Years Of Opening (2) (3) (4)
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Re: Nairaland Mathematics Clinic by mathefaro(m): 7:05am On Apr 04, 2020 |
HellVictorinho:How do you know that BDE is 90°? That has been the only missing piece of the puzzle. Every other angle of the triangle is so glaring |
Re: Nairaland Mathematics Clinic by Nobody: 12:19pm On Apr 04, 2020 |
mathefaro:It is perpendicular. |
Re: Nairaland Mathematics Clinic by Nobody: 12:21pm On Apr 04, 2020 |
mathefaro:How can I make money online? Please,let me know. |
Re: Nairaland Mathematics Clinic by mathefaro(m): 1:02pm On Apr 04, 2020 |
HellVictorinho:You must have assumed it to be 90° as nothing from the diagram suggests that fact. |
Re: Nairaland Mathematics Clinic by MrEDUCATION(m): 2:55pm On Apr 04, 2020 |
Please and please, I need a clear and detailed explanation to these questions... 1) Which of the following is not a factor of 124 - 54 A. 7 B. 13 C. 49 D. 169 E. 216 2) A quadrant of a circle of radius 6cm is cut away from each corner of a rectangle 25cm long and 18cm wide. Find the perimeter of the remaining figure. A) 38 B) 38+12π C) 86 -12π D) 86 -6π 3) ln root 216 - ln root 125 - ln root 8 divided by 2(ln 5 - ln 3) . A. -3/2 B. 3 C. 3/4 D. -3/2 E. ln6 - 2ln5 4) Find dy/dx, if y=6x × 3 -5x × 2+1/3x × 2 |
Re: Nairaland Mathematics Clinic by Mrshape: 6:08pm On Apr 04, 2020 |
HellVictorinho: mathefaro: mathefaro: jackpot: Here is the suggested solution
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Re: Nairaland Mathematics Clinic by Mrshape: 6:26pm On Apr 04, 2020 |
MrEDUCATION: |
Re: Nairaland Mathematics Clinic by dejt4u(m): 8:30pm On Apr 04, 2020 |
Mrshape:here I got x to be 20° |
Re: Nairaland Mathematics Clinic by Mrshape: 8:51pm On Apr 04, 2020 |
dejt4u:Show your workings |
Re: Nairaland Mathematics Clinic by Mrshape: 8:52pm On Apr 04, 2020 |
dejt4u:Because I got that before but when I solved again I got another thing, the solution is to long and am too lazy to check for errors |
Re: Nairaland Mathematics Clinic by mathefaro(m): 8:59pm On Apr 04, 2020 |
Mrshape:like I said earlier, you've made a lot of assumptions which you ought not to including the fact that those sides you labelled K are equal. I could also make some assumptions totally different from yours and get another answer. I still believe there's a piece missing from the question |
Re: Nairaland Mathematics Clinic by dejt4u(m): 9:01pm On Apr 04, 2020 |
mathefaro:those are not assumptions but facts.. We have 2 different isosceles triangles in that shape if you observe very well |
Re: Nairaland Mathematics Clinic by dejt4u(m): 9:02pm On Apr 04, 2020 |
Mrshape:I used your approach (esp. the initial approach). But I didn't follow your steps. |
Re: Nairaland Mathematics Clinic by mathefaro(m): 9:04pm On Apr 04, 2020 |
dejt4u:Oh Oh, my bad, I just saw what he did. I feel so embarrassed right now. Although I've spotted an error in his work
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Re: Nairaland Mathematics Clinic by Mrshape: 9:17pm On Apr 04, 2020 |
mathefaro:Sir 8 don't make any assumption. What ever you don't get let me know their is a proof for all my steps |
Re: Nairaland Mathematics Clinic by mathefaro(m): 9:19pm On Apr 04, 2020 |
Mrshape:I have pointed out an anomaly in your work in the post above. Check it out |
Re: Nairaland Mathematics Clinic by Mrshape: 9:27pm On Apr 04, 2020 |
mathefaro:You don't have to, it happens like that sometimes. We are learning from each others. Yes i i know their is error in computation but I was to lazy to sport it out, and it has become to urgent that many are having doubt if sin rule will work. So I just have to post to clear that doubt |
Re: Nairaland Mathematics Clinic by Mrshape: 9:30pm On Apr 04, 2020 |
mathefaro:Thanks that's were missed it. I was supposed to get 20° as the answer 1 Like |
Re: Nairaland Mathematics Clinic by mathefaro(m): 9:47pm On Apr 04, 2020 |
[quote author=Mrshape post=88097295][/quote]I don't think 49 is also a factor |
Re: Nairaland Mathematics Clinic by Mrshape: 10:03pm On Apr 04, 2020 |
mathefaro:7 x7 |
Re: Nairaland Mathematics Clinic by Mrshape: 10:05pm On Apr 04, 2020 |
mathefaro:You are correct 49 is not a factor |
Re: Nairaland Mathematics Clinic by MrEDUCATION(m): 4:38am On Apr 05, 2020 |
@ Mrshape Thank you Sir! The other questions were written just the way I typed it... |
Re: Nairaland Mathematics Clinic by digifted: 9:44am On Apr 05, 2020 |
Please help with this trigonometry.
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Re: Nairaland Mathematics Clinic by jackpot(f): 2:24pm On Apr 05, 2020 |
Re: Nairaland Mathematics Clinic by jackpot(f): 2:28pm On Apr 05, 2020 |
Mrshape: Initially, I used construction and it gave 20° though I wasn't satisfied because construction gives approximate results. I got 20° too, using sine rule mostly, and cosine rule once on triangle CDE, but solution is dependent on calculator and trig identities. I set AB=1 for obvious reasons since scaling won't affect angles. I even got the bonus fact that CE=AB.� 1 Like |
Re: Nairaland Mathematics Clinic by Mrshape: 3:02pm On Apr 05, 2020 |
jackpot:Alright Are you a maths student or a maths professor |
Re: Nairaland Mathematics Clinic by dejt4u(m): 3:27pm On Apr 05, 2020 |
Mrshape:He lectures maths |
Re: Nairaland Mathematics Clinic by Mrshape: 3:44pm On Apr 05, 2020 |
dejt4u:OK good |
Re: Nairaland Mathematics Clinic by mathefaro(m): 6:22pm On Apr 05, 2020 |
jackpot:Analytic solution also gave an approximate amswer |
Re: Nairaland Mathematics Clinic by calculusx(m): 7:07pm On Apr 06, 2020 |
Engrkawu: Please dey attach gift to these type of question I got the answer 6=A 7=B 8=D 9=E 10= C Let me show calculation from the examples 22 - (6x3) =4 18 - (5x2) = 8 22 - (7x3) = 1 |
Re: Nairaland Mathematics Clinic by calculusx(m): 10:17pm On Apr 07, 2020 |
Re: Nairaland Mathematics Clinic by Scaryface: 8:08am On Apr 08, 2020 |
MrEDUCATION: U sent me a message but I can't see it. I don't know how all my mails got deleted from yahoo . Please resend ur message |
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