translating and solving an equation with values of x and y known

m = 2*x.^3-2*y-sqrt((x-y.^3)./(1+(x-y)./(x.^2+3))+((sin(x./y*pi))+exp(y/3)))

with x=3.53 and y=2.8

i get an answer of 82.3740 - 3.9723i

Answer 1

[Star Strider]

In the third term, the square root is of the numerator only, not the entire expression, amd the denominator does not appear to have been coded correctly.

x=3.53

x = 3.5300

y=2.8

y = 2.8000

m = 2*x.^3-2*y-sqrt(x-y.^3)./(1+((x-y)./(x.^2+3)))+sin(x./y*pi)+exp(y/3)

m = 84.1864 - 4.0986i

These changes only slightly change the result.

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[Griffin Murphy]

Sorry, i had the equation copied incorrectly. Does this change anything?

[Griffin Murphy]

the professor said during class that someone got the answer right and i checked with that student to see if my answer was correct and he said no (to the one you gave me)

when I do the equation out regularly i get 83.5908318

[Star Strider]

That change is significant (note the added parentheses in the square root argument).

x=3.53

x = 3.5300

y=2.8

y = 2.8000

m = 2*x.^3-2*y-sqrt((x-y).^3)./(1+((x-y)./(x.^2+3)))+sin(x./y*pi)+exp(y/3)

m = 83.5908

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