Systems Of Equations With Elimination 4x 2y 5 2x Y 2 5 Video Khan Academy
Ex 57, 16 (Method 1) If 𝑒^𝑦 (x1)= 1, show that 𝑑2𝑦/𝑑𝑥2 = (𝑑𝑦/𝑑𝑥)^2 We need to show that 𝑑2𝑦/𝑑𝑥2 = (𝑑𝑦/𝑑𝑥)^2 𝑒^𝑦 (x1)= 1 Differentiating 𝑤𝑟𝑡𝑥 𝑑(𝑒^𝑦 (x1))/𝑑𝑥 = (𝑑(1))/𝑑𝑥 𝑑(𝑒^𝑦 (x 1))/𝑑𝑥 = 0 Using product rule in ey(x 1) As (𝑢𝑣)'= 𝑢'𝑣 𝑣'𝑢 where u = ey &1/2 1/2 = 1 not 1/4 Suppose you are making making pancakes, the recipe calls for 1/2 a litre of milk and makes 12 pancakes You need 18 pancakes and hence you need one and a half recipes Half of 1/2 is 1/4 so you need 1/2 plus 1/4 liters of
