A gardener has ten different potted plants, and they are spraying the plants with doses offertilizers. Plants can receive zero or more doses in a session. In the following, we count eachpossible number of doses the ten plants can receive (the order of spraying in a session doesnot matter). How many ways are there to do two sessions of spraying, where each plant receives atmost two doses total?

Q/Consider the set 8 e' = { x = (x\ 1 X 2 1 X3, ...) € (°: { \x;k< ∞ } Show that M & XII, Ixil = にし i= 1 defines a norm on

vector Q/Consider the real vector space R². For every X= (X/X2) ER². Let 11x11 = \xil+\x\. Show that 1.11 define a hormon R².

12. Suppose that a, b E R and a < b. Show that the vector space C[a, b] of all continuous complex valued functions defined on [a, b], with supremum norm is a Banach space. Ilflloc: = sup f(t), t€[a,b]

brayden knows that his distance from earth to pluto 5.9 times....

C. Since C SNEN 2. Suppose that V and Ware vector spaces over F. Consider the cartesian product V x W, with vector addition and scalar multiplication defined by (V1.W)+(V2, W2) (V1+V2, W₁ + W₂) for every (V1, W1). (V2, W2) EV x W and e€ F. a) Show that V x W is a vector space over F. and (v, w) (cv,₁) b) Suppose that || ||v is a norm on V and || ||w is a norm on W. Show that (v, w) defines a norm on V x W. vy+ww

Solve the following nonlinear system using Newton's method 1 f1(x1, x2, x3)=3x₁ = cos(x2x3) - - 2 f2(x1, x2, x3) = x² - 81(x2 +0.1)² + sin x3 + 1.06 f3(x1, x2, x3) = ex1x2 +20x3 + Using x (0) X1 X2 X3 10π-3 3 = 0.1, 0.1, 0.1 as initial conditio

2. (a) State Fermat's principle for the propagation of a light ray from point P at (x1,y1) to Q at (x2, y2), expressing the principle as a problem in Calculus of Variations. (b) Suppose c(y) is the speed of light in a medium, given by c(y) Y where a is a constant. Find the path of a light ray between the points P: (−1,3) and Q (1, 3). Is there more than one possible path? (c) Sketch the path of the light ray, and interpret what an observer at Q would see if there were a light source at P.

On a given day, the sea level pressure is 1013.2 hPA. The temperature at 3,000 ft AMSL is given as minus 4°C. The temperature difference compared with the ISA is: Can you give me a step by step explanation  ISA - 13°C ISA - 4°C (c)ISA - 10°C (d) ISA +10°C ISA is +15 Celsius  Answer is -13Celsius