Science:Math Exam Resources/Courses/MATH100/December 2010/Question 01 (g)/Statement

Short-Answer Questions. Each question is worth 3 marks, but not all questions are of equal difficulty. Full marks will be given for correct answers placed in the box, but at most 1 mark will be given for incorrect answers. Unless otherwise stated, it is not necessary to simplify your answers in this question.

Find the slope of the tangent line to the curve

$\displaystyle x^{4}-x^{2}y+y^{4}=1$

At the point (-1,1).