1 Given the demand function q=210p+900 (a) Find the are disticity of demand when p inctesses from 10 ta 11 (6) Find the are elasticity of demand when y increaces from 20 to 21 (c) Find the point elasticity of deusand when yn=10 and compere it with the are elasticity. Is denatad elastic on inelastic? Justify your absuer. (d) Fird the point elasticity of demand when p0=20 and compare it with the are elasticity. Is denated elastic on inelastic? Justify your absuer. 2. Calculate the folloning partial derivatives. z=x2y+2ry24xe32 (b) Find dza2,b3,dx22,by22 and 4y2i2 for zyln(3z)4 ln(xy) 3. Find the totil differential for csuh function: (a) z2z2+21xy3y3 (b) z4x3ln(xy)+6y 4. Coasider the following function: z3x22x+y31.5y2xy (a) Supposes that z and y increse: from x02 and w01 to z13 and y12. Find z. (b) Find the total diffrentinl of z..