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To answer this question we need to first decide what the question is asking for. In this case the question is asking for the first and second differential of a given function. If we have a function f(x) =...

Using the chain rule of dy/dx=dy/du * du/dx we label sin(x) as u. Now we differentiate u with respect to x, getting cos(x). Then we differentiate u² , getting 2u. Mutiplying these together gets...

So the first part of this question is regarding your knowledge and understanding on the subject matter. You should know that for real and equal roots, (b² - 4ac)=0. (For real and unequal roots,...

For this we must expand the bracket:5(x+3)= 5x+15and then we rearrange for 'x':x<9

To simplify the expression we use B(rackets)I(nidices)D(ivision)M(ultiplication)A(ddition)S(subtraction) in this specific order.Hence, here the first thing we need to do is identify each element of BIDMAS...