Friday

September 19, 2014

September 19, 2014

Posted by **Courtney** on Tuesday, September 28, 2010 at 7:00pm.

- calculus -
**Reiny**, Tuesday, September 28, 2010 at 8:25pmThese are very "nasty" equations, since there is no simple-level method of solving these.

I reduced it to

(1+r)^10 = 26.02359r

If you know Calculus, you can use Newton's Method,

otherwise, try something like this

It looks like your equation could have come from the amount of an annuity formula, so the r is probably an interest rate

make a chart with 3 columns

r | Left Side|Rigth Side

.05 1.62889 1.3 ---- off quite a bit

.06 1.79084 1.5614 --- let's go higher

.09 2.36736 2.345 --- hey, not bad

.095 2.4782 2.47224 -- closer !!

.096 2.50095 2.49826

.097 2.523866 2.524288 notice the Right side is now > the left side

so our r must be between .096 and .097

try .0965

Do you get the idea?

With a good calculator and some calculator skills this is not so bad

BTW, I put 26.02359 into memory of calculator

**Answer this Question**

**Related Questions**

Analytical chemistry help! - Calculate the pH of a solution made by mixing 50.00...

math - would you use mental math to solve 2984+1997+406? explain

math - Would you use mental math to solve 2984+1997+406? Explain?

AP Chemistry - Could you please check my work and let me know if my answer is ...

math - what is the percent of 438 to 789

Corporate Fiance - Given an annual lease payment of $438,020 find the rate of ...

math - round 8,438 and 5,555 to the nearest hundred

Calculus 1 Related Rates - Water is discharged from a pipeline at a velocity v(...

Science - what mammal order has the following dental formula: 006/406?

science - What mammal order has the following dental formula 006/406