D breadth dsec meters sec2 d dsec meters sec

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: units of measure. If we know the present altitude we time can tell how far the plane will glide before it touches the surface. Here the speed functions u’(t) and v’(t) are given. How will we find the glide ratio speed glide given only the horizontal position function u(t) and vertical position function v(t) ? position position 82 The glide ratio need not be a constant. Using our example of flight path of glide the ball one could ask: what is the INSTANTANEOUS RATE OF CHANGE of RANGE with respect to HEIGHT, both functions of the same parameter t. -HEIGHT = y(t) = u.sin θ . t -- 1 g t 2 . 2 RANGE = x(t) = u.cos θ . t . , du(x) u (x) =, We have Le HOSPITAL’S RULE : dv(x) v (x) Exerceise 1: Differentiate term by term the following: Exer erceise 1 x3 x5 x7 a) sin (x) = x -- --- + --- -- --- + . . . 3! 5! 7! x2 x4 x6 b) cos (x) = 1 -- --- + --- -- --- + . . . 2! 4! 6! x c) e x = 1 + --- + 1! x2 x3 --- + --- + . . . 2! 3! Exercise 2: Differentiate term by term sin (ax), cos (ax), and eax . Exer ercise 2 Exer ercise 3: rule Exercise 3 Differentiate sin (ax), cos (ax), and eax using the chain r ule. It is fundamental for the student to understand how to find the INSTANTANEOUS RATE OF CHANGE. He should feel at ease finding the INSTANTANEOUS RATE OF CHANGE of elementary functions where the w ell-behav ed proper ties SINGLE VALUED, ell-behav CONTINUOUS and DIFFERENTIABLE are easily satisfied. A function f(x) is an expression of CHANGE. Given f(x) the expression of CHANGE, AT w e c a n D I F F E R E N T I AT E f ( x ) a n d f i n d f ’( x ) t h e TA TA AT e x p r e s s i o n o f I N S TA N TA N E O U S R AT E O F C H A N G E . 83 17. Units of Measure A function may be dependent on more than one variable. For example f(x, y, z) may be a function of three independent variables x, y and z along the three orthogonal x-axis, y-axis and z-axis respectively. The function f(x, y, z) may describe the position of an object in 3-dimensional space. With any calculation there are two par ts: the oper ation p ar t and the units opera oper u nits measure differentia of measu...
View Full Document

This note was uploaded on 11/29/2012 for the course PHYSICS 105 taught by Professor Tamerdoğan during the Fall '09 term at Middle East Technical University.

Ask a homework question - tutors are online