calculus
13.
Use substitution to evaluate integral subscript 0 superscript straight pi over 2 end superscript sin 2 x square root of 4 plus 9 sin squared x end root space d x
Ans. 1/27(26 sq.rt 13-16 = 2.88 (ok)
12.
To the nearest two decimal places, calculate R subscript 5f left parenthesis x right parenthesis equals x cubed plus 1open square brackets 0 comma space 4 close square brackets
Ans. 96.16