Helping students gain understanding and self-confidence in algebra.
TheAngryMathStudent wrote:I have no idea where to start with these problems.
TheAngryMathStudent wrote:1) Find an approximate value 11^(1/3) with using 3 iteration of Newtons method with startpoint of x-3/2 on an appropriate function
TheAngryMathStudent wrote:2) 6,5m ladder resting up against a wall. The lader gets pulled away from the wall (while still resting on it) at a speed of 0,5 m/s. At what speed does the ladder move downward when it's 6m up on the wall.
TheAngryMathStudent wrote:I still don't really grasp how to work it out though,
stapel_eliz wrote:Start by drawing a picture, just like you did back in algebra. Then label the wall (between the floor and where the ladder's top hits the wall) as "y", the floor (between the wall and the base of the ladder) as "x", and the length of the ladder as "L = 6.5". Note that L is fixed, so dL/dt = 0; and you're given that dx/dt = 0.5. Then see if maybe the Pythagorean Theorem gives you anything useful.