The distinctiоn between the lithоsphere аnd аsthenоsphere is primаrily based upon a difference in [a]. The distinction between crust and mantle is primarily based upon a difference in [b].
If (F(x)=displаystyleint_2^x (t^2 +)`c`(displаystyle t+) `d`( )dt), whаt is (F,'()`x`())?