Solved

Calculate dy dx\frac { \mathrm { d } y } { \mathrm {~d} x }

Question 78

Multiple Choice

Calculate dy dx\frac { \mathrm { d } y } { \mathrm {~d} x } . You need not expand your answer. y=(x1.2+1.2x) (x2+7) y = \left( \frac { x } { 1.2 } + \frac { 1.2 } { x } \right) \left( x ^ { 2 } + 7 \right)


A) 2x(11.21.2x2) 2 x \left( \frac { 1 } { 1.2 } - \frac { 1.2 } { x ^ { 2 } } \right)
B) (11.21.2x2) (x2+7) 2x(x1.2+1.2x) \left( \frac { 1 } { 1.2 } - \frac { 1.2 } { x ^ { 2 } } \right) \left( x ^ { 2 } + 7 \right) - 2 x \left( \frac { x } { 1.2 } + \frac { 1.2 } { x } \right)
C) 2x(11.21.2x2) +(x1.2+1.2x) (x2+7) 2 x \left( \frac { 1 } { 1.2 } - \frac { 1.2 } { x ^ { 2 } } \right) + \left( \frac { x } { 1.2 } + \frac { 1.2 } { x } \right) \left( x ^ { 2 } + 7 \right)
D) 2x2 x
E) (11.21.2x2) (x2+7) +2x(x1.2+1.2x) \left( \frac { 1 } { 1.2 } - \frac { 1.2 } { x ^ { 2 } } \right) \left( x ^ { 2 } + 7 \right) + 2 x \left( \frac { x } { 1.2 } + \frac { 1.2 } { x } \right)

Correct Answer:

verifed

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Related Questions