Question

prove that div curl a = 0

14+6√5 

electrician wants to repair an electric connection on a pole of height 9m.he needs to reach 1.8m below the top of the pole to do repeir work . what should be the length of the ladder which he should use,when he climbs it at an angie of 60 with ground ? what will be the distance between foot of the ladder and foot of the pole?

Integration of root tan x

The position vector of a particle at time t is . Find the condition imposed on α by requiring that at time t = 1, the acceleration is normal to the position vector.

Is this solution right or not

Find  the absolute maximum and  minimum value of a function f given by f(x)= 2x^3-15x^2+36x+1 on the interval (1,5)

you have little mistakes in solutions so correct it

Sin^-1[✓x✓(1-x^2) -x✓(1-x)] in simplest form