Recent content by Tiome_nguyen

Hello everyone, i have 2 problems in my multivariable calculus homework that i can't solve . Please help me out, thank you so much 1/f(x,y)= [(x^2) -2y]^(0.5) a) Find directional derivatives of f at (2,-6) in the direction of <-4,3> b) Find equation of the tangent plane to the function...

thank you so much for ur the explanations :)

Hello, i need help on this question, i have been thinking about it assume there is a hole through the center of the Earth , and oxygen is exist so we can breath , if we drop the ball into the hold, is it possible for ball go through the center of the Earth to other side of the hole ? so what i...

Homework Statement i have some problems that i tried to do but i couldn't get the answer , i hope you can help me, please, 1. what is the average value of y for the part of the curve y = 3x-x^2 which is in the first quadrant? the answer is -6 , but i couldn't get it 2. the average...

1.if f and g are odd and even functions , respectively, such that f(a)= b and g(c) = b, b cannot equal 0, then [f(-a)/g(-c)] + f(-a) - g(-c) = A. -1 B. -1-2b C. -1+2b D. 1-2b E. 1+2b 2.if r= 4 sin(angle) is converted to rectangular coordinates , then A. x^2 + (y-2)^2 = 4 B. (x-2)^2...