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Create a function where both partial derivatives exist at (1,1) but the function isn't differentiable at (1,1)

Im honestly not comfortable enough with the rules of differentiability and how they relate to partials to understand this question.Any help?-Faires and Faires (later editions may have another author t

Some Algebra Help easy? Thanks.

2.Given the function g(x)=x/x^2-5x find the vertical aymptote and point of discontinuity Went over this is class today, but I was spacing out...-The vertical asymptote is the denominator equal to zer

If E is a space of linear equations in 3 variables with standard operations, how can we show that W is a...

subspace of E, if the equations have x=1, y= -1 and z=3 as solutions. W = { ax + by + cz = d| a,b,c,d elements of real numbers and x=1, y= -1 and z=3 } Note that W can have other solutions as well.

Quick Math Questions

Write a polynomial function, P, in factored form by using the given information: 1. P is of degree 2; P(0) = -2; zeros: -1 and 4 2. P is of degree 4; P(0) = -4; zeros: 1/2(multiplicity of 2) and 2 +

How do you simplify (x-y)/(x+y) + (x+y)/(x-y)

Im supposed to simplify it by finding the least common denominator but I cant figure it out. Can you show me the steps to solve this please?-x-y.........x+y —— +..——— x+y........x-y Least common den

GRADE 11 MATH Help Please!

I need help with the following question... I need to simplify these 2 questions.... 1. 6x^2+7x-3 over 2x+3 2. 3x(3x+1)-(1+9x^2)-1.) (6x²+7x-3)/(2x+3) → [(2x+3)(3x-1)]/(2x+3) → 3x-1 Solution: 3x-1

Could you please simplify x^2 - 6x +9 / x^2 -9

thank you-x^2 - 6x +9 / x^2 -9 (x - 3)(x - 3) / (x - 3)(x + 3) (x - 3)/(x + 3)-x^2 - 6x + 9 -----------------x^2 - 9 ok, so you must factorize both up and down part. In the upper part, we need to f

What does this equation represent

1 + X^2 +X^4 + X^6 + X^8 +...= (1-X^2)^-1-its a summation starting at 0 and going on to infinity: x^2n using this and plugging in values for n, starting at zero, you get the series from your questio

Trigonometric Identities

can someone help me with my math homework please i dont understand these 2 questions Prove that each of the following equations is an identity 1) 1+sinΘ / sinΘ=cosΘcotΘ /1-sinΘ 2) secΘ - cosΘ = (c

Very Difficult Math Problem. Please Help!

PLEASE SHOW YOUR WORK FOR THE FOLLOWING MATH PROBLEM! THANKS!! A fast-food chain sells chicken nuggets in boxes of 8, 9, and 20. What is the largest number of chicken nuggets that is impossible to bu

How to solve square roots by hand

as an example, use square root of 5. show me the steps on how to do it? ive always wondered.-A simple way to compute a square root is the high/low method, similar to the bisection method. This method

What do these mathematical relationship mean

z=log wifw=e^z-i assume that you mean the natural log.based off that assumption: first, this is just a simple substitution. lets take z = log(w) and plug w = e^z into the first equation. z = log(e^

How do I find f ' (3)

How would I find f (3) using IMPLICIT DIFFERENTIATION? Let y = f(x). If xy^3 + xy = 6, and f(3) = 1, find f (3) Can someone please explain or show steps so I can understand? Thank you-Differentiat

Disc method for volumes

In Calculus, I missed a couple of days when we went over this in class and although my teacher explained it to me, Im still a little confused. Ive been going at these problems for a while, but I just

Math Distribution Help

If 6(x+y)(x-y)=60 and x-y=30, what is the value of x+y? Im studying for the SAT and I dont know how to do this one!-Well, first let a=x+y, which is what youre looking for. Then, let b=x-y=30. Plug th
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