Does anyone sit down with pen and paper anymore? I used to use trig on a daily basis, and rarely used a calculator. My kids are issued calculators in school. Heck, most of the most common sines used, I memorized years ago.

I guess it is one of those things that you lose if it isn't used.

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1987 560SL
85,000 miles

Pen & Paper? No. Only to take notes. Number crunching is why computers were invented. That and doing your tax returns
Think of the ctizen revolt if people had to try and navigate their returns today with pencil and paper. Want a simple tax code? Ban computer use. Won't happen you say? Neither will the tax code become "simple"
If I could relive my yute and could choose between becoming proficient in math or the piano, I'd choose the piano. My mother gave up wasting money on me taking piano lessons.

I'm always sketching and figuring on paper. It seems like it's much easier to be creative on the spur of the moment if you're not near a computer or other electronic device.

I also do all of my initial sketching on paper for projects. I'm pretty decent at drawing to scale and after the concept is laid out, I move to the computer for actual scale drawings.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Over here they now have maths exams that are tech free. They make the students use their brain & show that they actually understand how to do maths.
A well trained monkey can push buttons on a calculator.

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

Log(A) = B+ n log(1+x)
Log(A)-B = n(log(1+x)
(Log(A)-B)/n = log(1+x)
exp((Log(a)-b))/n) = exp(log(1+x))
exp(A-B)-exp(n) =1+x
x = exp(A-B)-exp(n) -1

Is that right?

Trig is easy to do on paper as long as you have CRC tables. Without them it is much more time consuming. A scientific calculator makes it a walk in the park.

Oscar Has A Heap Of Apples

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

I used a pen and paper, lol. Apparently I Was wrong but I'd like to see the math behind it as well to see where I messed up

I hated algebra but I need to take Calc 1 just for fun so I have it on my transcripts

okay.

A=B(1+X)**(n)

A/B=(1+X)**(n)

ln--> natural log

ln(A/B)=(n) ln(1+X)

(1/n) ln(A/B)=ln(1+x)

(1/n) ln(A/B)=ln(1)+ln(X)

(1/n) ln(A/B) - ln(1)= ln(x)

e**[(1/n) ln(A/B)]-e**[ ln(1)] = e**[ln(X)]

(A/B)**(1/n) -1= X

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Onus probandi incumbit ei qui dicit, non ei qui negat

I recondition w123/w126/w124/w140/r107/r129/ steering boxes!


1984 300D "Elsa" odo reset 6/2011 147k
1983 300TD "Mitzi" ~268k OM603 powered
1995 E300 "Adelheid" 262k [Sold]